This is the complete checklist of birds in Taiwan, last revised by the Chinese Wild Bird Federation in 1995. The English common name is followed by the scientific name, followed by the given status in parenthesis. Next to most species are my own comments about each species based on personal experience and reported sightings in recent years. See Most Wanted Species for more detailed descriptions of endemics, near-endemics, and rare species. To know which species I have seen in Taiwan, please see my Life List of Birds in Taiwan.

Key

PODICIPEDIFORMES
Podicipedidae

Little Grebe Tachybaptus ruficollis (CR) - The most common grebe. Often found in freshwater bodies including lakes, marshes, fish ponds, and ornamental ponds.
Great Crested Grebe Podiceps cristatus (RW) - Rare in Taiwan, though a common winter resident in Kinmen National Park.
Horned Grebe Podiceps auritus (V) - Very rare, but occasionally reported every few years.
Black-necked Grebe Podiceps nigricollis (RW) - Rare, usually in freshwater or brackish ponds near the coast.

Tahiti Petrel Pseudobulwaria rostrata (?) - A few rehabilitation records, but very few sightings in the wild.
Bulwer's Petrel Bulweria bulwerii (?) - A rather common seabird that can be seen not too far from shore. The best way to see this bird is to go on board a deep sea fishing vessel or on a dolphin-watching boat. This bird may be seen from shore at times, especially when typhoons are nearby.
White-faced Shearwater Calonectris leucomelas (?) - The most common shearwater, though not particularily abundant. The pale phase is by far the most common.
Pale-footed Shearwater Puffinus carneipes (V)
Sooty Shearwater Puffinus griseus (?) - No recent records.
Wedge-tailed Shearwater Puffinus pacificus (?) - The second most common shearwater, though much less common than the White-faced Shearwater. Difficult to distinguish from the Short-tailed Shearwater.
Short-tailed Shearwater Puffinus tenuirostris (?) - A rare shearwater that is far less common than either the White-faced or Short-tailed.

Swinhoe's Storm Petrel Oceanodroma monorhis (?)

Red-tailed Tropic Bird Phaethon rubricauda (V)
White-tailed Tropic Bird Phaethon lepturus (V)

Grey Pelican Pelecanus philippensis (V) - Pelicans have appeared in Taiwan once every few years, usually in the winter.

Brown Booby Sula leucogaster (?) - A fairly common resident off coastal waters, and occasionally seen from shore, especially along the northern coast.

Great Cormorant Phalacrocorax carbo (CW) - A common winter resident in both freshwater and saltwater bodies. Occurs in huge roosts in Kinmen National Park.
Japanese Cormorant Phalacrocorax capillatus (V) - Very similar to the Great Cormorant and probably overlooked. Prefers coastal areas.

Great Frigate Bird Fregata minor (V)
Lesser Frigate Bird Fregata ariel (RS-NB)

Grey Heron Ardea cinerea (CW) - Very large and distinctive heron, very common in marshes and estuaries.
Purple Heron Ardea purpurea (UCW) - Far less common than the Grey Heron, more often seen in the marshes of Ilan County.
Great Egret Egretta alba (CW) - At times may be tricky to tell apart from Intermediate Egret, very common in marshes. Small numbers stay in Taiwan throughout the year.
Intermediate Egret Egretta intermedia (CW) - A common bird in most wetland habitat. Very much like the Great Egret.
Little Egret Egretta garzetta (CR) - The most common egret. Seen everywhere where there is water, both freshwater and saltwater, still and flowing, plains and hills. Nests in large colonies with Cattle Egrets and Black-crowned NIght Herons.
Swinhoe's Egret Egretta eulophotes (UCT) - Globally threatened species. Transitional and not always predictable. More easily seen at Yehliao, Taipei County during migration.
Reef Egret Egretta sacra (UCR) - Both black and white phase present, but black more common than white. Prefers rocky coastal shores.
Cattle Egret Bubulcus ibis (CS,UCW) - Very common egret, often seen in drier habitats. The numbers in Taipei decline drastically in the winter for unknown reasons.
Chinese Pond Heron Ardeola bacchus (RW) - Rare winter resident in Taiwan, and common resident in Kinmen National Park.
Green-backed Heron Butorides striatus (RR,UCW) - Most are probably winter residents, though is also a small resident population. Prefers fast flowing streams.
Black-crowned Night Heron Nycticorax nycticorax (CR) - Very common in most rivers, wetlands and ponds.
Japanese Night Heron Gorsachius goisagi (V) - Probably a migrant that has been overlooked because of its secretive habits.
Malaysian Night Heron Gorsachius melanolophus (UCR) - Very easy to see at specific locations where they are known to nest, but otherwise secretive and hard to locate.
Chinese Little Bittern Ixobrychus sinensis (CR) - Very secretive bird that is difficult to locate except during breeding season.
Schrenk's Bittern Ixobrychus eurhythmus (V) - Rare, though probably a few have been sighted every year.
Cinnamon Bittern Ixobrychus cinnamomeus (CR) - More common in southern Taiwan, also secretive like the Chinese Little Bittern but easily flushed.
Black Bittern Ixobrychus flavicollis (V) - Very few records, though there have been a few sighted in recent years.
Eurasian Bittern  Botaurus stellaris (RW) - A very well camouflage bird! Winters in extensive reed beds such as that of Kuantu Nature Park, Ao-ku, and Ilan.

Black Stork Ciconia nigra (RT) - Globally threatened species. A few are sighted every year during migration season, especially in the southwest.
Oriental White Stork Ciconia boyciana (V) - Globally threatened species. Probably a rare transient as a few are seen every migration season. in 1994, a pair had taken residence at Kuantu Nature Park in Taipei where they built two nests and attempted to breed before they were killed in 1998.

Oriental Ibis Threskiornis melanocephalus (V) - Rare, but may have been overlooked because of its similarity with the Sacred Ibis Threskiornis aethiopicus, a well-established introduced species. Can be differentiated by the lack of black tail and lack of black on the trailing edge of wings.
White Spoonbill Platalea leucorodia (RW) - Globally threatened species. A few are often mixed in the winter flock of Black-faced Spoonbills in Tainan. Also seen in other wetlands during migration.
Black-faced Spoonbill Platalea minor (LUCW) - Highly endangered species. More than two-thirds of the world population winters from October through March at Tsengwen River Estuary in Tainan County, which is under threat from development. Also likely to be seen at other marshes during migration.

Tundra Swan Cygnus columbianus (V) - A few stayed through much of the winter at Wuwei Harbor Waterfowl Reserve in Ilan County in 1997.
Swan Goose Anser cygnoides (V) - A few individuals stayed for some time at Kuantu Nature Reserve in Taipei in a recent winter.
Bean Goose Anser fabalis (V) - Individuals and small flocks have been recorded at Lanyang River Estuary in Ilan County. Uncommon winter resident at Kinmen National Park.
White-fronted Goose Anser albifrons (V) - One mixed in with a flock of Bean Goose recorded at Lanyang River Estuary.
Greylag Goose Anser anser (V) - Rarely reported, in the winter.
Ruddy Shelduck Tadorna ferruginea (RW) - Very conspicuous, but rare.
Common Shelduck Tadorna tadorna (RW) - Very rarely reported.
Mandarin Duck Aix galericulata (RR,RW) - Resident population known to inhabit streams near Wuling Farm in Shei-pa National Park, various streams and reserviors near Kukuan, Taichung County, and the artificial pond in Fushan Botanical Garden, Ilan County. Also seen in high altitude lakes and ponds where they may breed.
European Wigeon Anas penelope (CW) - Often forms large flocks in ponds, estuaries, and other freshwater or brackish wetlands.
American Wigeon Anas americana (V) - Very rarely reported.
Falcated Teal Anas falcata (RW) - Common winter resident in Kinmen National Park.
Gadwall Anas strepera (UCW) - A few may be mixed in large flocks of ducks in ponds or estuaries.
Baikal Teal Anas formosa (RW) - Globally threatened species. A few winter in Tamsui River, Taipei, every year. May be seen from the duck park at Huajiang Bridge or Kuantu Nature Park.
Green-winged Teal Anas crecca (CW) - The most numerous wintering duck. Forms huge flocks with other ducks in freshwater rivers, marshes, and ponds.
Mallard Anas platyrhynchos (UCW) - Not difficult to see in marshes, but usually in small flocks.
Spotbill Duck Anas poecilorhyncha (CW,RR) - Very common in the winter in rivers, ponds, and marshes. There are some localized resident populations.
Philippine Duck Anas luzonica (V) - Very few records, mostly in southern Taiwan.
Northern Pintail Anas acuta (CW) - Very common winter resident, often forms large mixed flocks at estuaries.
Garganey Anas querquedula (CT,RW) - Most easily seen during migration season, but rarely in large numbers.
Northern Shoveller Anas clypeata (CW) - Often found in large flocks with Green-winged Teal and Northern Pintail.
Canvasback Aythya valisineria (V) - No records in recent years, may be overlooked as European Pochard.
European Pochard Aythya ferina (UCW) - Very uncommon, often found mixed in flocks of other ducks.
Baer's Pochard Aythya baeri (RW) - Globally threatened species, rare but regularily reported, usually mixed in flocks of other ducks.
Ferruginous Duck Aythya nyroca (V) - Not illustrated in field guide.
Tufted Duck Aythya fuligula (LCW) - Forms very large flocks in some areas such as Longluan Lake in Kenting National Park.
Greater Scaup Aythya marila (RW) - Often mixed in flocks of Tufted Ducks.
Smew Mergus albellus (V) - Has been seen in Ilan County in recent years.
Red-breasted Merganser Mergus serrator (V) - A small number of records in recent years.
Chinese Merganser Mergus squamatus (V) - Globally threatened species. Very few records in recent years.
Goosander Mergus merganser (V) - Also called Common Merganser, very few records.

Osprey Pandion haliaetus (UCW) - Rather common in some areas. A small population appears to be residents in reservoirs though there are no confirmed breeding records yet.

Oriental Honey Buzzard Pernis ptilorhynchus (UCW,UCT) - Various color forms that may be confused with other raptors. Often forms flocks when migrating. Breeding has been confirmed for a small resident (or summer resident) population, usually in the mountains.
Black Kite Milvus migrans (RR) - The threatened resident population may be boosed by migratory individuals during migration season and winter. Resident population now very localized in Keelung Harbor and scattered reservoirs around ths island.
White-tailed Sea Eagle Haliaeetus albicilla (V) - A few individuals recorded almost annually during hawk migration season.
Cinereous Vulture Aegypius monachus (V) - Has been recorded in recent years at an estuary.
Crested Serpent Eagle Spilornis cheela (CR) - The most abundant raptor, common in all forested areas. Immature birds have a pale form that may be confused with Hodgson's Hawk Eagle.
Grey-faced Buzzard Eagle Butastur indicus (CT,RW) - Hawk migration takes place in October consisting of tens of thousands of birds. Best seen at Kenting National Park around October 10th. May also be seen in the spring at Ba-gua Mt. in Changhua County, Buddha Mountain in Taipei County, and various other mountainous regions.
Hen Harrier Circus cyaneus (RW) - Rare but reporteded every year.
Pied Harrier Circus melanoleucos (V) - Has been seen in recent years.
Eastern Marsh Harrier Circus spilonotus (RW) - The most common harrier, though not abundant. Easily seen in most marshes.
Asian Crested Goshawk Accipiter trivirgatus (CR) - May be confused with Besra Sparrow Hawk. Has adapted to urban parks in some areas.
Grey Frog Hawk Accipiter soloensis (CT) - Hundreds of thousands may migrate through Kenting National Park in a single day during the peak of migration season late September.
Japanese Sparrow Hawk Accipiter gulari (UCT,RW) - Often mixed in flocks of migrating hawks. May easily be confused with Besra and Northern Sparrow Hawk.
Besra Sparrow Hawk Accipiter virgatus (CR) - Occurs in relatively undisturbed lowland forest, where not abundant but quite common.
Northern Sparrow Hawk Accipiter nisus (RW) - Often confused with Besra and Japanese Sparrow Hawk.
Northern Goshawk Accipiter gentilis (V) - Probably a rare transient, has been recorded annually during hawk migration season, both autumn and spring.
Eurasian Buzzard Buteo buteo (RW) - Rare but regularily reported during hawk migrations. Has confirmed breeding records.
Rough-legged Buzzard Buteo lagopus (RW) - Less often reported than Eurasian Buzzard, also during hawk migrations.
Indian Black Eagle Ictinaetus malayensis (UCR) - Not too difficult to see in the mountains where there are large tracts of undisturbed old forest.
Greater Spotted Eagle Aquila clanga (RT) - Reported every year, especially during spring migration season, and occasionally winters in some areas.
Imperial Eagle Aquila heliaca (V) - Globally threatened species. Reported almost annually during spring migration season, more often in the spring.
Hodgson's Hawk Eagle Spizaetus nipalensis (RR) - Almost exterminated by unrestrained hunting and collecting in the past and increasingly threatened by habitat loss. Found only in the most remote and undisturbed forests.

Common Kestrel Falco tinnunculus (CW) - Common on open plains.
Merlin Falco columbarius (V) - Very rarely reported, may sometimes have been confused with Common Kestrel since this species is not shown in field guide.
European Hobby Falco subbuteo (RT) - Rare but regularily reported during autumn and spring hawk migrations.
Peregrine Falcon Falco peregrinus (UCW,RR) - Globally threatened species. Not too hard to see in estuaries and coastal areas during the winter. Breeding has been confirmed, but rare.

Indian Blue Quail Coturnix chinensis (?)
White-throated Hill Partridge Arborophila crudigularis (CR) - Commonly heard, but definitely the most difficult endemic species to spot. Habitat requirements similar to Swinhoe's Pheasant.
Chinese Bamboo Partridge Bambusicola thoracica (CR) - Commonly heard and not too difficult to see. Quite accustomed to visitors in some national parks.
Swinhoe's Pheasant Lophura swinhoii (RR) - Endangered species. Threatened by habitat destruction and poaching. Not difficult to see at specific locations.
Mikado Pheasant Syrmaticus mikado (UCR) - Endangered species. Suffers from less habitat destruction than Swinhoe's Pheasant. Not difficult to see at specific locations.
Common Pheasant Phasianus colchicus (RR) - Suffers from habitat loss and hunting pressure, also from interbreeding with other introduced subspecies. More easily seen on the east coast.

Little Button Quail Turnix sylvatica (?) - Few or no recent records.
Bustard Quail Turnix suscitator (CR) - The most common quail. Often found in sugarcane plantations and tall grasses, but very secretive.

Common Crane Grus grus (V) - Has been reported in recent years, usually juveniles at Ilan.
Hooded Crane Grus monacha (V) - Has been reported in recent years.

Blue-breasted Banded Rail Rallus striatus (UCR) - Secretive, but often reported in marshes along the southwestern coast.
Water Rail Rallus aquaticus (RW) - Very rarely seen, but probably a few are recorded every year at places like Kuantu Nature Park in Taipei.
Banded Crake Rallina eurizonoides (RT) - Status uncertain. A resident or summer resident popution is know to breed in undisturbed lowland forest. Very secretive and very rarely reported. A few migrating individuals are reported every year, often injured birds.
White-browed Rail Porzana cinerea (RT) - Few or no records in recent years, probably more likely in the south.
Baillon's Crake Porzana pusilla (V) - A few recent records, but very secretive and rare.
Ruddy-breasted Crake Porzana fusca (CR) - Secretive, but quite common especially in wetlands in the south.
White-breasted Water Hen Amaurornis phoenicurus (CR) - Common and widespread in most wet areas, including city drainage canals and small ponds.
Water Cock Gallicrex cinerea (UCS,RR) - Secretive and uncommon summer resident. More easily seen during migration. Probably prefers to breed in tall grasses.
Moorhen Gallinula chloropus (CR) - Very common in flooded wetlands and ponds. Somewhat shy but not hard to see.
Black Coot Fulica atra (UCW) - Uncommon and rarely in large numbers. Prefers freshwater and brackish ponds, and more common on the east and in the south. Very common winter resident in Kinmen National Park.

Pheasant-tailed Jacana Hydrophasianus chirurgus (RR,RS) - Severly threatened resident population found in a small area in Tainan County. Fewer than a hundred are believed to remain. Rare migratory population possible in grassy wetlands.

Painted Snipe Rostratula benghalensis (CS,RR) - Summer resident breeds in rice paddies and nearby canals and fields. Rather common, but not easy to spot.

Palaearctic Oystercatcher Haematopus ostralegus (RT) - Very few recent records in Taiwan, but there are annual reports in Kinmen National Park; probably uncommon winter resident there.

Black-winged Stilt Himantopus himantopus (LUCS,UCW) - Uncommon winter resident in most areas, but especially numerous in wetlands of Tainan County. A resident population also breeds in Tainan County.
Pied Avocet Recurvirostra avosetta (LUCW) - Rare migrant or winter resident in most areas, but around 300 to 600 regularily visit the fish ponds and wetlands of Tainan County each winter, and numbers increasing each year.

Eastern Collared Pratincole Glareola maldivarum (CS,RW) - Uncommon migrant in most area. Localized breeding resident, especially on some dry riverbeds.

Northern Lapwing Vanellus vanellus (UCW) - Generally uncommon, but can regularily be found in large numbers in some wetlands in Ilan and along the west coast.
Grey-headed Lapwing Vanellus cinereus (RT) - Rare, but quite a few are reported every year during migration.
Pacific Golden Plover Pluvialis fulva (CW) - Common winter resident. American Golden Plover Pluvialis dominica suspected to be a vagrant overlooked in flocks of Pacific Golden Plovers in winter plumage. Prefers drier fields more inland than Grey Plovers and may form large flocks.
Grey Plover Pluvialis squatarola (CW) - Common in most rivermouths, estuaries, and mudflats. Usually less numerous than Pacific Golden Plovers.
Ringed Plover Charadrius hiaticula (V) - A few are reported every year. May have been overlooked in large flocks of Little Ringed Plovers.
Little Ringed Plover Charadrius dubius (CW,RS) - Very common winter resident. Small localized breeding populations on some dry riverbeds.
Kentish Plover Charadrius alexandrinus (CW,UCS) - Very common winter resident. Small localized breeding populations on some dry riverbeds. Similar to Little Ringed Plover.
Lesser Sand Plover Charadrius mongolus (CT,RW) - Common on large mudflats and estuaries during migration.
Long-billed Ring Plover Charadrius placidus (V) - Rarely reported. Probably overlooked in large flocks of Little Ringed Plovers.
Greater Sand Plover Charadrius leschenaultii (CT) - Common in estuaries and open marshes during migration.
Eastern Sand Plover Charadrius veredus (V)

Black-tailed Godwit Limosa limosa (UCT) - Uncommon and in small numbers during migration. Found in mudflats, marshes, and sometimes fish ponds.
Bar-tailed Godwit Limosa lapponica (UCT) - Uncommon and in small numbers during migration. Found in estuaries, mudflats, and marshes.
Little Curlew Numenius minutus (RT) - Uncommon or rare migrant in estuaries or coastal areas.
Whimbrel Numenius phaeopus (CT,UCW) - Common during migration in coastal areas and river mouths.
Western Curlew Numenius arquata (CT,LCW) - Common migrant but not in large numbers in most places. Very large wintering flock at Tatu River Estuary in Changhua, but habitat under threat from garbage dumping.
Far Eastern Curlew Numenius madagascariensi (UCT) - Less common than Western Curlew. Usually seen in open estuaries during migration, often associating with Western Curlews.
Spotted Redshank Tringa erythropus (RW) - Uncommon migrant in mudflats and sometimes fish ponds.
Common Redshank Tringa totanus (UCT,RW) - Common in some places, especially the fish ponds of Tainan County.
Marsh Sandpiper Tringa stagnatilis (UCW,CT) - Common in mudflats and open marshes.
Common Greenshank Tringa nebularia (CW) - Common winter resident in most rivers, estuaries, and mudflats.
Spotted Greenshank Tringa guttifer (V) - Vagrant that may be confused with Common Greenshanks.
Lesser Yellowlegs Tringa flavipes (V) - Hardly any records in recent years.
Green Sandpiper Tringa ochropus (CW) - Fairly common, but not in great numbers. Prefers grassy marshes.
Wood Sandpiper Tringa glareola (CW) - Common, and often the first shorebird to arrive in August.
Terek Sandpiper Xenus cinereus (UCT) - Uncommon migrant in coastal areas and estuaries.
Common Sandpiper Actitis hypoleucos (CW) - The most common sandpiper found in all types of habitat from rocky coasts, mudflats, to tumbling mountain streams. Some stay throughout the year but no confirmed breeding yet.
Grey-tailed Tattler Heteroscelus brevipes (CT) - Common migrant at marshes and estuaries.
Wandering Tattler Heteroscelus incanus (V) - Very few reported, but almost every year. Easily confused with Gray-tailed Tattlers.
Ruddy Turnstone Arenaria interpres (CT,LCW) - Common transient in most areas. Very large wintering flock near Tatu River Estuary in Changhua.
Red-necked Phalarope Phalaropus lobatus (CT) - Very common during migration, but very uncommon through the winter. Migrates in large flocks on the ocean.
Grey Phalarope Phalaropus fulicarius (V) - Very few records, but possibly confused with Red-necked Phalarope at times.
Eurasian Woodcock Scolopax rusticola (RW) - A few reported every year during winter months and migration period. Some are recorded in the mountains.
Pintail Snipe Gallinago stenura (UCW) - Probably not as rare as once thought, just overlooked as Common Snipe.
Swinhoe's Snipe Gallinago megala (RW) - Very few records, probably overlooked as Common Snipe.
Common Snipe Gallinago gallinago (CW) - The most common snipe. Most snipes are assumed to be this species when there isn't a chance for positive identification. Prefers grassy marshes where it is difficult to spot.
Jack Snipe Lymnocryptes minimus (?) - Status uncertain. Possibly a rare migrant as there are a number of recent reports from Orchid Island.
Long-billed Dowitcher Limnodromus scolopaceus (RT) - Rare migrant and winter resident in some areas. Easily confused with Asiatic Dowitcher. Usually found in marshes and estuaries.
Asiatic Dowitcher Limnodromus semipalmatus (RT) - Often confused with Long-billed Dowitcher. Rare migrant in similar places as Long-billed Dowitcher.
Red Knot Calidris canutus (UCT) - Uncommon, probably prefers rice paddies, mudflats, and open marshes.
Great Knot Calidris tenuirostris (CT) - Similar to Red Knot, but more common. Usually in small numbers.
Sanderling Calidris alba (UCW) - Not often reported. Probably overlooked in large flocks of Dunlins or other shorebirds.
Western Sandpiper Calidris mauri (V) - Very few reported in recent years. Possibly overlooked.
Rufous-necked Stint Calidris ruficollis (CT,UCW) - Common in most marshes and rice paddies.
Little Stint Calidris minuta (V)
Temminck's Stint Calidris temminckii (RW) - A few are recorded every winter.
Long-toed Stint Calidris subminuta (UCW) - Uncommon in rice paddies and grassy marshes. More common during migration.
Sharp-tailed Sandpiper Calidris acuminata (CT) - Common migrant in flooded fields, rice paddies, and marshes. May be confused with vagrant Pectoral Sandpiper Calidris melanotos.
Dunlin Calidris alpina (CW) - Very common and forms very large flocks at estuaries and open mudflats.
Curlew Sandpiper Calidris ferruginea (CT) - Common migrant or winter resident, but usually in small numbers in rice paddies and marshes.
Spoon-billed Sandpiper Eurynorhynchus pygmeus (V) - Rarely reported, usually mixed in large flocks of other sandpipers.
Broad-billed Sandpiper Limicola falcinellus (UCT) - Uncommon. May be overlooked in large flocks of Dunlin.
Stilt Sandpiper Micropalama himantopus (V) - Very rarely reported. Some doubtful records in recent years.
Ruff Philomachus pugnax (RT) - Rare, but reported every winter, especially in fish ponds in Tainan County. Winter plumage may be confused with other sandpipers.

Arctic Skua Stercorarius parasiticus (V)

Japanese Gull Larus crassirostris (UCW) - Uncommon. Usually appears singly or in small numbers in coastal areas in the winter.
Eastern Mew Gull Larus kamtschatschens (V)
Herring Gull Larus argentatus (UCW) - Uncommon migrant or winter resident. Usually seen in small numbers in coastal areas, especially along the northern coast.
Slaty-backed Gull Larus schistisagus (RW) - Rare, often confused with Herring Gull. More reports from the south in recent years.
Glaucous Gull Larus hyperboreus (V)
Black-headed Gull Larus ridibundus (CW) - The most common wintering gull. Likely to appear in all major rivers, but especially numerous in rivers in the central and southern west coast.
Saunders's Gull Larus saundersi (UCW) - Globally threatened species. Less common than Black-headed Gull, but regular winter resident near Tatu River Estuary and along the southwestern coast.
Black-legged Kittiwake Rissa tridactylus (V)
Whiskered Tern Chlidonias hybrida (UCW,CT) - Common during migration, may form large migrating flocks in marshes, river mouths, and dams. Some stay around rivers and marshes through the winter.
White-winged Black Tern Chlidonias leucoptera (CT) - Often mixed with Whiskered Tern flocks during migration.
Black Tern Chlidonias nigra (V) - Very few recent records.
Gull-billed Tern Gelochelidon nilotica (RT) - Very few records. Likely to be misidentified.
Caspian Tern Hydroprogne caspia (RW) - Rare, but small numbers winter in some areas such as Tsengwen River Estuary.
Common Tern Sterna hirundo (UCT) - Uncommon migrant. Breeds during the summer on uninhabited islands at Penghu.
Roseate Tern Sterna dougallii (LUCS,RT) - Rare migrant. Uncommonly breeds alongside Common Terns on uninhabited islands at Penghu.
Black-naped Tern Sterna sumatrana (LCS,UCT) - Breeding colony at Penghu. Fairly common at most harbors and coastal regions.
Bridled Tern Sterna anaethetus (LCS,RT) - Breeding colony at Penghu. Uncommon throughout coastal regions.
Sooty Tern Sterna fuscata (V) - Rare. May breed in tern colony at Penghu.
Little Tern Sterna albifrons (CS,CW) - Common at harbors, coastal areas, and rivermouths. Breeds on dry riverbeds.
Greater Crested Tern Thalasseus bergii (LCS) - Breeding colony at Matsu. Small numbers found throughout coastal regions especially the northern and eastern coast.
Common Noddy Anous stolidus (LCS) - Breeding colony at Penghu. Rarely found in coastal regions.

Crested Murrelet Synthliboramphus wumizusume (V) - Very few reports in recent years.

Ashy Wood Pigeon Columba pulchricollis (CR) - Common in mid elevation broadleaf and mixed forests. Often flies and roosts in large flocks.
Black Wood Pigeon Columba janthina (V) - Very rarely reported. May be confused with similar looking domestic Rock Doves.
Eastern Turtle Dove Streptopelia orientalis (CR) - Common or uncommon from the plains up to 2,000 meters in elevation.
Red-collared Dove Streptopelia tranquebarica (CR) - The most abundant dove on the plains. Forms huge flocks feeding in fields or perched on wires.
Spotted-necked Dove Streptopelia chinensis (CR) - Very common on the plains and in cities. Usually found feeding in small groups on the ground.
Large Brown Cuckoo Dove Macropygia phasianella (LCR) - Only found on Orchid Island where it is common in dense forests.
Emerald Dove Chalcophaps indica (UCR) - Uncommon to rare in low elevation broadleaf forests. Fairly common on Orchid Island. Feeds on the ground.
Japanese Green Pigeon Treron sieboldii (CR) - Common from the foothills up to 2,000 meters in elevation. Prefers to stay in the canopy. Often seen in large flocks.
Formosan Green Pigeon Treron formosae (LUCR) - Similar to Japanese Green Pigeon, but localized to coatal and lowlad forests in southern Taiwan and Orchid Island where it is uncommon.

Red-winged Crested Cuckoo Clamator coromandus (V) - A few reported during migration almost every year.
Large Hawk Cuckoo Cuculus sparverioides (CS) - Commonly heard, especially in the higher elevations, but difficult to see.
Eurasian Cuckoo Cuculus canorus (V) - Almost no recent records. Possibly overlooked.
Oriental Cuckoo Cuculus saturatus (CS) - Common summer resident. More common on hills than the plains. Likes to perch on exposed branches and wires.
Small Cuckoo Cuculus poliocephalus (RT) - Probably confused with Oriental Cuckoo. Occasionally reported during migration.
Lesser Coucal Centropus bengalensis (CR) - Common on the plains and developed hills. Prefers tall grass with sparse trees.

Grass Owl Tyto capensis (?) - A few recent records from developed plains, mostly injured or captured birds. Probably near extinction.

Spotted Scops Owl Otus spilocephalus (CR) - The most abundant owl in the hills in forests of all types.
Eurasian Scops Owl Otus scops (RT) - Rare. A few records each year during migration, often captured or injured birds.
Collared Scops Owl Otus bakkamoena (CR) - The most common owl found at low elevation forests and foothills. May also be found in city parks sometimes.
Riukiu Scops Owl Otus elegans (LCR) - Endangered. Found only on Orchid Island, where it is still relatively common in the forest and nearby villages.
Tawny Fish Owl Ketupa flavipes (RR) - Very secretive and rare. Sometimes steals fish from trout farms in the mountains of Taipei, Ilan, and Hualien County. Under threat from pollution and poaching.
Brown Wood Owl Strix leptogrammica (RR) - Endangered. Widespread but very rarely seen. Prefers mature forests up to 2,500 meters. Under pressure from habitat loss and poaching.
Eurasian Tawny Owl Strix aluco (UCR) - Probably more common than previously thought to be. Usually found in conifer forests above 2,000 meters in elevation.
Collared Owlet Glaucidium brodiei (CR) - Most common at mid elevation forests. Also calls during the day, and often mobbed by small birds.
Brown Hawk Owl Ninox scutulata (LUCR,UCT) - Uncommon migrant or summer resident in low elevation forests. Common resident at Orchid Island.
Long-eared Owl Asio otus (V) - Rare, very few records. Secretive and difficult to spot.
Short-eared Owl Asio flammeus (UCW) - Uncommon winter resident in grassy marshes, especially in the southwest.

Jungle Nightjar Caprimulgus indicus (V) - Occasionally recorded during migration. Possibly confused with Allied Nightjar.
Allied Nightjar Caprimulgus affinis (?) - Not as rare as previously believed. Stable resident population lives at various riverbeds around the island. Possible migratory population.

White-throated Spinetailed Swift Hirundapus caudacuta (CS) - The least common swift. Huge. Usually seen in small flocks in mountains.
Fork-tailed Swift Apus pacificus (CS) - Common, especially during migration. Often forms large flocks with House Swifts.
House Swift Apus affinis (CR) - The most abundant swift. Very common in most habitats, even the city. May flock in the hundreds before showers. Often nests on the sides of buildings and under bridges.

River Kingfisher Alcedo atthis (CR) - Common in ponds, rivers, streams, and occasionally coastal areas. Nests on the mud walls of riverbanks.
Ruddy Kingfisher Halcyon coromanda (RT) - Rare, but occasionally reported during migration, usually near the coast.
White-throated Kingfisher Halcyon smyrnensis (V) - Rarely reported in recent years. Uncommon resident at Matsu and Kinmen National Park.
Black-capped Kingfisher Halcyon pileata (RT) - Small numbers are reported during migration each year. One or two have spent the winter in the mangrove forest at Kuantu Nature Park for the past number of years.

Eastern Broad-billed Roller Eurystomus orientalis (RT) - A few are reported every year, typically during migration. Sometimes appears in mountainous areas.

Hoopoe Upupa epops (UCT) - Regular migrant in coastal areas, particularly the northern coast, during the spring, but rare in the autumn. Very few individuals stay through the winter. Common resident at Kinmen National Park.

Muller's Barbet Megalaima oorti (CR) - Very common from city parks to forests around 1,500 meters in elevation. Sometimes difficult to spot in the dense foliage. Silent and may form flocks during the winter.

Northern Wryneck Jynx torquilla (V) - Probably a rare migrant. Reported annually during migration in coastal areas.
Grey-capped Woodpecker Picoides canicapillus (CR) - Common in forests up to 2,000 meters, but more common at lower elevations.
White-backed Woodpecker Picoides leucotos (CR) - Common in mid-elevation forests from 1,000 to 2,000 meters in elevation. Call and drumming similar to but louder than that of Grey-capped Woodpecker.
Grey-faced Woodpecker Picus canus (UCR) - Uncommon in coniferous forests, usually above 1,500 meters in elevation. Prefers pine forests.

Blue-winged Pitta Pitta brachyura (RS) - Uncommonly breeds in localized areas such as Shihmen Dam in Taoyuan and Meinung in Kaohsiung.

Oriental Skylark Alauda gulgula (CR) - Prefers open ground or grassy fields. Males often sing while hovering in the air. Very common at Penghu. Fairly common in the appropriate habitats in Taiwan.

Brown-throated Sand Martin Riparia paludicola (CR) - Common near rivers and rice paddies. Breeds on riverbanks.
Sand Martin Riparia riparia (UCT) - Far less common than Brown-throated Sand Martin, but prefers similar habitat.
Barn Swallow Hirundo rustica (CS,RW) - More common in the north where they nest on the walls of buildings. During migration, thousands of birds may roost in reed beds.
Pacific Swallow Hirundo tahitica (CR) - Most common from plains to mid elevation. Often breeds on the walls of buildings.
Greater Striated Swallow Hirundo striolata (CR) - More common in the central and south, often building their tunnel nests on the ceiling of buildings. May also be seen in the north during migration, which is probably a seperate population. Should note whether the Red-rumped Swallow Hirundo daurica occurs.
Asian House Martin Delichon urbica (CR) - Now called D. dasypus. Common in mid and upper elevations, some descending to lower elevations during the winter. Nests on cliffs and occasionally buildings.

Forest Wagtail Dendronanthus indicus (V) - Rarely reported.
Yellow Wagtail Motacilla flava (CW) - Common, often in large flocks, in rice paddies and open ground. Most common on plains.
Grey Wagtail Motacilla cinerea (CW) - Common. More likely to be found in mountainous regions than Yellow Wagtail, often near streams.
Pied Wagtail Motacilla alba (CW,CR) - Common in all habitats from plains to mid elevation. Often found near streams. Large roost in downtown Taipei at Ren-Ai Rd.
Richard's Pipit Anthus novaeseelandiae (CW) - Fairly common on open fields. May be confused with Oriental Skylark.
Indian Tree Pipit Anthus hodgsoni (CW) - More common where there are more trees with open space nearby. May be found from plains up to mid elevation.
Red-throated Pipit Anthus cervinus (CW) - Common and often forms mixed flocks with other pipits on open ground or dry rice paddies.
Petchora Pipit Anthus gustavi (RT) - Occasionally found in mixed flocks of pipits.
Water Pipit Anthus spinoletta (UCW) - Occasionally found in mixed flocks of pipits.

Black-faced Cuckoo Shrike Coracina novaehollandiae (UCR) - Localized in place such as Fushan Botanical Garden, Ilan and Shanping, Kaohsiung.
Dark-grey Cuckoo Shrike Coracina melaschistos (V) - Reported almost annually during migration; probably rare migrant. May be seen in mountainous forests.
Ashy Minivet Pericrocotus divaricatus (RT) - Seen only during migration, often through forests from plains up to mid elevation.
Yellow-throated Minivet Pericrocotus solaris (CR) - Gray-throated Minivet a more appropriate name. Common from low elevations up to around 2,000 meters. Forms large flocks outside of breeding season, often mixed with Bronzed Drongo, Maroon Oriole, and Pygmy Woodpecker.

Collared Finchbill Spizixos semitorques (CR) - Common in semi-developed areas with grass and sparse trees. Most common at low elevations.
Chinese Bulbul Pycnonotus sinensis (CR) - Abundant in developed areas on the west and northeast. Follows development into higher elevations.
Formosan Bulbul Pycnonotus taivanus (CR) - Common in the southeast in developed areas. Hybridizes with Chinese Bulbul where ranges overlap.
Chestnut-eared Bulbul Hypsipetes amaurotis (LCR) - Japanese subspecies rare migrant, usually seen at Yehliao on the northern coast during migration, sometimes in large flocks. Endemic subspecies common on Green and Orchid Island, occasionally reported in Taiwan in Taitung or Kenting.
Black Bulbul Hypsipetes madagascariensi (CR) - Very common in forests of low elevation and plains. Forms large flocks in the winter.

Bull-headed Shrike Lanius bucephalus (V) - Rarely reported, very few recent records.
Brown Shrike Lanius cristatus (CT,UCW) - Most common in open areas on plains, often hunting from exposed perches. Two subspecies present: L. c. superciliosus has brown head and back, L. c. lucionensis has a gray head.
Black-headed Shrike Lanius schach (CR) - Common to uncommon in most regions with tall grasses and sparse trees. Black and intermediate forms also exist in Kinmen National Park.

Japanese Waxwing Bombycilla japonica (V) - Unpredictable. Has been known to appear in large flocks, sometimes in forested mountainous areas. Bohemian Waxwing B. garrulus has also been recorded.

Brown Dipper Cinclus pallasii (CR) - Common in clean, running streams from low to mid elevation. Nests early in the year in between rocks on cliffs adjacent to stream. Never found far from water.

Wren Troglodytes troglodytes (CR) - Common in short bamboo or scrubs in upper elevations.

Alpine Accentor Prunella collaris (CR) - Found only on the highest peaks. Most easily seen by the roadside near Hohuanshan, Nantou. Very tame and approachable.

Blue Shortwing Brachypteryx montana (CR) - Common but one of the most difficult birds to see. Often calls from underbrush in mid elevation forests.
Japanese Robin Erithacus akahige (RW) - Rarely seen. Reports usually from banding in forested, low-elevation regions such as Fushan Botanical Garden, Ilan.
Riukiu Robin Erithacus komadori (V) - Few or no recent records.
Siberian Rubythroat Erithacus calliope (CW) - Common in grassy areas on plains, often in marshes. Rather secretive.
Siberian Blue Robin Erithacus cyane (V) - Few or no recent records.
White-browed Bush Robin Erithacus indicus (UCR) - Uncommon in mid elevation forested areas. Often seen on logging trails.
Collared Bush Robin Erithacus johnstoniae (CR) - Common and easily seen in open areas 2,000 meters or above in elevation.
Red-flanked Bluetail Tarsiger cyanurus (UCW) - Uncommon winter resident. Prefers forested areas on plains and low elevations.
Bluethroat Luscinia svecicus (RW) - Rarely reported, usually through banding in reed beds and grassy marshes.
Black Redstart Phoenicurus ochruros (V) - Rarely, though almost annually, reported from Yehliao on the northern coast.
Plumbeous Water Redstart Phoenicurus fuliginosus (CR) - Easily seen in clean, running streams from low to mid elevation. Occasionally seen away from water to feed on insects or fruit.
Daurian Redstart Phoenicurus auroreus (UCW) - Uncommon winter resident. Prefers sparse forest on plains and low elevations.
White-tailed Blue Robin Cinclidium leucurum (UCR) - Common in mid elevation forests, descending to lower elevations in winter. Prefers dark forest floors. Usually encountered on trails.
Little Forktail Enicurus scouleri (UCR) - Found in mid elevation, prefers small and fast running streams through dense forest. Occasionally seen away from streams on wet logging trails.
Common Stonechat Saxicola torquata (RW) - Not too difficult to see in known wintering locations, usually in marshes with tall grasses.
Grey Bushchat Saxicola ferrea (V) - Prefers similar habitat as Common Stonechat, but very few records, usually during migration.
Blue Rock Thrush Monticola solitarius (CW,RR) - Easily seen in open areas, rooftops, and coastal areas in the winter. Small resident population seen in coastal areas.
Formosan Whistling Thrush Myiophoneus insularis (CR) - Common in moist forests from plains to mid elevation, often found in or near streams. Sometimes secretive. Most active early in the morning.
Siberian Ground Thrush Zoothera sibirica (V) - Rare, but reported almost annually during migration, usually at Yehliao.
White's Thrush Zoothera dauma (UCW) - Usually seen on the forest floor or logging trails from plains up to mid elevation. Very little known about a rare resident subspecies Z. d. horsfieldi.
Japanese Grey Thrush Turdus cardis (V) - Rare, but reported almost annually during migration, usually at Yehliao.
Blackbird Turdus merula (RT) - Usually seen during migration, occasionally through the winter, in sparsely forested areas on plains.
Island Thrush Turdus poliocephalus (UCR) - Rare, but not too difficult to see in specific areas. Prefers old forest in mid elevation. Often forms large flocks with other thrushes to feed on clusters of red berries.
Red-bellied Thrush Turdus chrysolaus (CW) - Common from plains to nearly 3,000 meters in elevation. Prefers open ground.
Pale Thrush Turdus pallidus (CW) - Prefers open ground or lightly wooded areas from plains up to mid elevation.
Eye-browed Thrush Turdus obscurus (RW,UCT) - Less common on plains, where it prefers lightly wooded areas. More common in mid elevation forests, where it forms large flocks with other thrushes.
Dusky Thrush Turdus naumanni (CW) - Common on open ground on plains. Less common in mountainous regions, but seen in forests up to 2,500 meters in elevation.
Grey-backed Thrush Turdus hortulorum (RT) - Rarely reported, usually from Kinshan or nearby areas on the northern coast.

Rusty-cheeked Scimitar Babbler Pomatorhinus erythrogenys (CR) - Secretive, but not difficult to see. Usually found in small flocks  in grassy areas or forest undergrowth of mid elevation forests or lower.
Streak-breasted Scimitar Babbler Pomatorhinus ruficollis (CR) - Very secretive and difficult to see. Prefers undergrowth of dense forest from low to mid elevation. Usually appears in pairs or small flocks.
Pygmy Wren Babbler Pnoepyga pusilla (CR) - Very secretive and very difficult to see. Prefers dense undergrowth of mid elevation forest.
Red-headed Tree Babbler Stachyris ruficeps (CR) - Common, but not easy to see. Travels in flocks in dense grasses from plains to high elevations.
White-bellied Tree Babbler Stachyris zantholeuca (CR) - Often forms large, noisy flocks with Grey-cheeked Fulvetta but not as numerous. Prefers mid and upper levels of broadleaf forest from low to mid elevation.
White-throated Laughing Thrush Garrulax albogularis (UCR) - Rare, but sometimes forms very large flocks in mid elevation forests. Travels through the forest at all levels, from forest floor to canopy.
Rufous Laughing Thrush Garrulax poecilorhynchus (UCR) - Common but secretive in dense mid elevation forest. May form rather large flocks. Tends to stay in understory or on the ground. Rarely ventures into the open, but may feed on forest trails.
Melodious Laughing Thrush Garrulax canorus (UCR) - Common in some areas, but genearlly uncommon to rare. Secretive, but not difficult to locate when singing. Prefers tall grasses or sparse forest from plains to low elevation. Hybridizes with introduced Chinese subspecies.
Formosan Laughing Thrush Garrulax morrisoniana (CR) - Fearless and easily seen in open areas at upper elevations. Often seen foraging in small flocks near garbage dumps.
Steere's Liocichla Liocichla steerii (CR) - Usually rather secretive, but very common and not hard to locate. Found in small flocks and prefers dense undergrowth. Many different types of calls commonly heard. Those at Hsitou have become accustomed to tourists.
Formosan Barwing Actinodura morrisoniana (UCR) - Usually seen in small flocks in the middle story of mid elevation forests. Often feeds clinging to tree trunks and branches. May be found on fruiting trees or cherry blossoms.
Streak-throated Fulvetta Alcippe cinereiceps (CR) - Found in tall grassy areas or forest underbrush above 2,000 meters in elevation.
Gould's Fulvetta Alcippe brunnea (CR) - Skulker, but responds well to pishing. Often travels in small flocks on the floor of mid and low elevation forests.
Grey-cheeked Fulvetta Alcippe morrisonia (CR) - Abundant and forms large, noisy flocks in the middle story of  mid and low elevation forests. Often mixed with other species of babblers or tits.
White-eared Sibia Heterophasia auricularis (CR) - Common but stays in the treetops of mid elevation forests. Descends to low elevations during the winter. Flocks with Island Thrush in the winter. Often seen feeding in cherry blossoms in the spring. Gathers on fruiting trees in the autumn and winter.
Formosan Yuhina Yuhina brunneiceps (CR) - Very common in mid elevation forests. Descends to lower elevations in winter. Travels in flocks through middle story of forest, sometimes with other babblers or tits. Often feeds in cherry blossoms.

Vinous-throated Parrotbill Paradoxornis webbianus (CR) - Travels in small, noisy flocks through dense brush or grass on plains and low elevation.
Blyth's Parrotbill Paradoxornis nipalensis (UCR) - Rather rare, found in dense grasses and scrub in upper elevations.

Scaly-headed Stubtail Urosphena squameiceps (UCT,RW) - Usually encountered during migration in grassy areas or forest undergrowth.
Japanese Bush Warbler Cettia diphone (CW) - Very common during migration, but less common through the winter. Vocal in the spring.
Strong-footed Bush Warbler Cettia fortipes (CR) - Secretive though often heard. Prefers tall grasses in mid elevation, sometimes low elevation. A fairly isolated population is found in Yangmingshan National Park.
Verreaux's Bush Warbler Cettia acanthizoides (CR) - Not as difficult to see as Strong-footed Bush Warbler. Prefers similar habitat.
Mountain Scrub Warbler Bradypterus seebohmi (CR) - Shy but not hard to locate. Often heard in mid and upper elevation forests and in tall grasses.
Lanceolated Warbler Locustella lanceolata (UCT) - Secretive. Usually reported during migration.
Middendorff's Grasshopper Warbler Locustella ochotensis (RW) - Secretive. Usually reported through banding in marshes during migration.
Gray's Grasshopper Warbler Locustella fasciolata (V)
Schrenk's Reed Warbler Acrocephalus bistrigiceps (RW) - Secretive, usually in reed beds or marshes.
Great Reed Warbler Acrocephalus arundinaceus (CW) - Common but rather secretive. Usually skulks in reed beds, occasionally out in the open. Sings in the spring.
Zitting Cisticola Cisticola juncidi (CR) - Common in short grasses or open ground, especially on riverbanks.
Gold-capped Cisticola Cisticola exilis (UCR) - Less common than Zitting Cisticola, prefers similar habitat.
Hill Prinia Prinia criniger (UCR) - Common on developed hillsides and plains. More common in central regions.
Tawny-flanked Prinia Prinia subflava (CR) - Very common wherever tall grasses grow.
Yellow-bellied Prinia Prinia flaviventris (CR) - Found in similar areas as Tawny-flanked Prinia, also very common.
Dusky Warbler Phylloscopus fuscatus (V) - Reported annually, probably rare migrant or winter resident. Usually in marshes or coastal forests during migration.
Pallas' Leaf Warbler Phylloscopus proregulus (RT) - Usually seen in forested plains or coastal areas during migration.
Yellow-browed Warbler Phylloscopus inornatus (UCW) - Usually seen in forested plains or coastal areas during migration.
Arctic Warbler Phylloscopus borealis (CW) - Usually seen in forested areas from plains to low elevation.
Pale-legged Willow Warbler Phylloscopus tenellipes (V) - Reported almost annually along migration routes, usually in forested plains or coastal areas such as Yehliao, Taipei.
Temminck's Crowned Willow Warbler Phylloscopus coronatus (V) - Reported almost annually in coastal forested areas such as Yehliao, Taipei.
White-throated Flycatcher Warbler Abroscopus albogularis (CR) - Somewhat secretive, but easily seen in flocks of mid elevation forests.
Taiwan Firecrest Regulus goodfellowi (CR) - Found in small flocks in coniferous forests of upper elevations.
Goldcrest Regulus regulus (RW) - Prefers forested areas, especially pines, on plains or coastal areas.

Grey-streaked Flycatcher Muscicapa griseisticta (UCT) - Usually seen during migration, often in mountainous regions.
Siberian Flycatcher Muscicapa sibirica (V) - Reported occasionally, usually in coastal or low elevation forested areas such as Yehliao, Taipei.
Brown Flycatcher Muscicapa dauurica (UCT) - Most often seen during migration in coastal or low elevation forested areas.
Ferruginous Flycatcher Muscicapa ferruginea (CS) - Fairly common in mid elevation forests up to 2,000 meters in elevation.
Narcissus Flycatcher Ficedula narcissina (RT) - Reported annually, especially in forested areas on plains and coastal areas such as Yehliao, Taipei.
Mugimaki Flycatcher Ficedula mugimaki (RW) - Prefers forested coastal areas or plains, usually seen during migration.
Red-breasted Flycatcher Ficedula parva (V) - Reported almost annually, usually in coastal forests and migrant traps such as Yehliao, Taipei.
Thicket Flycatcher Ficedula hyperythra (CR) - Very secretive, but easily heard. Found in mid elevation forests, descending to lower elevations during the winter.
Blue & White Flycatcher Cyanoptila cyanomelaena (RT) - Most easily seen during migration at migrant traps such as Yehliao, Taipei. May also appear in forested areas from coastal regions to low elevations.
Vivid Niltava Niltava vivida (CR) - Common in mid elevation forests. Some descend to lower elevations during the winter.

Black-naped Blue Monarch Hypothymis azurea (CR) - Most common in second growth or degraded forest in low elevations or plains.
Black Paradise Flycatcher Terpsiphone atrocaudata (LUCS,UCT) - Uncommon to rare migrant in Taiwan, usually found in forested areas nsear the coast, such as Yehliao, Taipei. Uncommon resident on Orchid Island where it inhabits the dense coastal forests.

Red-headed Tit Aegithalos concinnus (CR) - Often forms large flocks in mid and upper elevation forests.

Penduline Tit Remiz pendulinus (RT) - Only a few records in recent years, usually in marshes with tall grass during migration.

Coal Tit Parus ater (CR) - Common in coniferous forests in upper elevations. Forms mixed flocks with Taiwan Firecrests, Eurasian Nuthatches, and other small birds traveling through the upper layers of the forest.
Green-backed Tit Parus monticolus (CR) - Common in mid and upper elevations and descends to lower elevations in the winter. Often found in mixed flocks.
Formosan Yellow Tit Parus holsti (UCR) - Uncommon. Forms small flocks in mid elevation broadleaf forests, often mixed in flocks of other small tits and babblers. Usually found in the canopy. Males sing loudly.
Varied Tit Parus varius (UCR) - Localized distribution, where it is uncommonly found. Populations known in low elevation forests near Wulai in Taipei, Fushan Botanical Garden in Ilan, and Kukaun in Taichung. Travels in small flocks in the upper regions of the forest.

Eurasian Nuthatch Sitta europaea (CR) - Often runs along the trunk and branches of trees, pecking like a woodpecker. Common in mid and upper elevation forests, sometimes in mixed flocks with tits and babblers.

Plain Flowerpecker Dicaeum concolor (UCR) - Uncommon  in low elevation forests. Tends to stay in the treetops, calling loudly during the spring and summer. Likes to feed on the fruits of a parasitic plant.
Green-backed Flowerpecker Dicaeum ignipectus (CR) - Common in mid and upper elevations, sometimes descending to lower elevations in the winter. Prefers treetops of broadleaf trees, and likes to feed on the fruits of a parasitic plant.

Japanese White-eye Zosterops japonica (CR) - Abundant in developed areas, especially city parks. Usually found in low elevations and plains, but follows development into mid and upper elevations.

Crested Bunting Melophus lathami (V) - Few or no recent records.
Tristram's Bunting Emberiza tristrami (RT) - Reported annually during migration at migrant traps such as Yehliao, Taipei.
Grey-hooded Bunting Emberiza fucata (V) - Rarely reported in recent years.
Little Bunting Emberiza pusilla (UCT) - Usually seen during migration, in small flocks in trees or in tall grass.
Yellow-browed Bunting Emberiza chrysophrys (RT) - Usually reported during migration at migrant traps like Yehliao.
Rustic Bunting Emberiza rustica (RT) - Occaionally reported at migrant traps and marshes with tall grasses during migration.
Yellow-headed Bunting Emberiza elegans (RW) - Rarely reported.
Yellow-breasted Bunting Emberiza aureola (UCT) - Rarely reported.
Chestnut Bunting Emberiza rutila (UCT) - Usually seen during migration at migrant traps such as Yehliao.
Black-headed Bunting Emberiza melanocephala (V/#)
Japanese Yellow Bunting Emberiza sulphurata (RW,UCT) - Globally threatened species. Occasionally seen at migrant traps during migration.
Black-faced Bunting Emberiza spodocephala (CW) - The most abundant bunting, common in tall grasses from plains up to mid elevation.
Pallas' Reed Bunting Emberiza pallasi (V) - Very few recent records.
Reed Bunting Emberiza schoeniclus (V) - Very few recent records.

Brambling Fringilla montifringilla (UCT,RW) - Occasionally seen, often in flocks, during migration in forests on plains or coastal areas.
Oriental Greenfinch Carduelis sinica (RT) - Usually seen in forests near the coast or in migrant traps such as Yehliao. Common resident at Kinmen National Park.
Spruce Siskin Carduelis spinus (UCW) - Large flocks during migration, sometimes winters in forests up to mid elevation.
Common Rosefinch Carpodacus erythrinus (V) - Very few recent records.
Vinaceous Rosefinch Carpodacus vinaceus (CR) - Common along roadsides and open areas in upper elevation above 2,000 meters.
Brown Bullfinch Pyrrhula nipalensis (CR) - Common in mid elevation forests, appearing in small flocks.
Beavan's Bullfinch Pyrrhula erythaca (CR) - Feeds in small flocks on the ground in upper elevations of 2,000 meters of above.
Hawfinch Coccothraustes coccothraustes (V) - Reported annually during migration, usually in coastal forests and migrant traps.
Black-tailed Hawfinch Coccothraustes migratorius (RW) - Occasionally reported in forests on plains or coastal areas.
Masked Hawfinch Coccothraustes personatus (V) - Occasionally reported during migration in coastal forests or in low to mid elevation forests.

White-backed Munia Lonchura striata (CR) - Common in similar habitat as Nutmeg Mannikin, but often in mountainous regions.
Nutmeg Mannikin Lonchura punctulata (CR) - Travels in flocks in tall grasses and rice fields on plains.
Chestnut Mannikin Lonchura malacca (?) - Found in similar habitat as above two species and often forms mixed flocks. Rare endemic subspecies, and possibly established populations from cage birds in some areas.

Cinnamon Sparrow Passer rutilans (RR) - Usually seen in developed areas in mountainous regions. Often replaced by Eurasian Tree Sparrows nowadays.
Eurasian Tree Sparrow Passer montanus (CR) - Abundant and widespread in developed and urban areas. Follows development into mountainous regions.

Silky Starling Sturnus sericeus (LUCW) - Uncommon, usually seen in flocks with other starlings. Large flocks reported in recent years.
Violet-backed Starling Sturnus philippensis (RT) - Reported annually, usually migrating in small flocks or with other starlings.
Grey Starling Sturnus cineraceus (UCW) - Sometimes forms large flocks, prefers open ground.
Daurian Starling Sturnus sturninus (?) - Rare winter resident or vagrant. Small flock has been seen in Kuantu Nature Park in recent years.
Common Starling Sturnus vulgaris (RW) - Reported annually, but rare.
Chinese Starling Sturnus sinensis (UCW) - Usually seen during migration in small flocks in coastal areas or marshes.
Chinese Jungle Mynah Acridotheres cristatellus (CR) - Common in developed areas on plains, but hybridizes with introduced subspecies and other myna species.

Black-naped Oriole Oriolus chinensis (RR,RT) - Formerly common resident, but suffered through extensive trapping in the past. Now rare and localized, more common in south such as Kenting National Park. A few breeding pairs at Tamsui in Taipei. Some seen in coastal forests during migration. Prefers plain or coastal forests.
Maroon Oriole Oriolus traillii (UCR) - Rare in most areas, uncommon in localized places such as Fushan Botanical Garden in Ilan, Meinung and Shanping in Kaohsiung, and most low elevation forests in the east coast such as Chihpen in Taitung. Usually pairs or small flocks, sometimes follows flocks of Gray-throated Minivets.

Black Drongo Dicrurus macrocercus (CR) - Very common and widespread in farmlands and open plains. Often perches on wires and exposed areas.
Ashy Drongo Dicrurus leucophaeus (V) - Reported almost annually during migration, usually in migrant traps like Yehliao.
Bronzed Drongo Dicrurus aeneus (CR) - Common in forested mountainous regions up to 2,000 meters in elevation. Often associates with Gray-throated Minivet flocks during the winter. Rarely leaves the forest for long.

Jay Garrulus glandarius (CR) - Common in mid elevation forests, descending to lower elevations during the winter.
Formosan Blue Magpie Urocissa caerulea (UCR) - Travels in flocks in low elevation forests. Sometimes mixed with Himalayan Tree Pies.
Himalayan Tree Pie Dendrocitta formosae (CR) - Common in forested areas from plains up to 2,000 meters in elevation. Sometimes forms large flocks.
Black-billed Magpie Pica pica (UCI) - Introduced. Now common throughout plains on the west but not found in the east.
Spotted Nutcracker Nucifraga caryocatactes (CR) - Fairly common in upper elevation forests above 2,000 meters in elevation. Often perches on exposed snags.
Jackdaw Corvus monedula (V) - A few reported on the northern coast and in Ilan in recent years.
Rook Corvus frugilegus (RW) - Very few reported in recent years, in Ilan and northern coast.
Large-billed Crow Corvus macrorhynchos (CR) - Common in mountainous regions, especially near villages.

Red-throated Diver Gavia stellata - Two wintered in Matsu in 1997.
Black-throated Diver Gavia arctica
Bonin Petrel Pterodroma hypoleuca
Short-tailed Albatross Diomedea albatrus
Black-footed Albatross Diomedea nigripes - One reported off Ilan coast in summer of 1997.
Pelagic Cormorant Phalacrocorax pelagicus
White-faced Egret Egretta novaehollandia
Japanese Crested Ibis Nipponia nippon - Sighted again at Penghu in 1998.
Indian Whistling Duck Dendrocygna javanica
Mute Swan Cygnus olor - One recorded in 1998, probably an escapee.
Whooper Swan Cygnus cygnus
Lesser White-fronted Goose Anser erythropus - One lingered for a couple weeks at Kuantu Nature Park in Taipei in 1998.
Brant Goose Branta bernicla
Cotton Teal Nettapus coromandelian - Has been sighted for at least two consecutive winters in Tainan.
Common Goldeneye Bucephala clangula - Has been sighted for a few consecutive years off the shore of Hualien.
White-bellied Sea Eagle Haliaeetus leucogaster - Recently seen in Taipei County (without ruling out the possibility of it being an escapee).
Common Quail Coturnix coturnix
Manchurian Crane Grus japonensis
Japanese White-naped Crane Grus vipio
Red-legged Crake Rallina fasciata - Reported a number of times in recent years at Penghu.
Japanese Snipe Gallinago hardwickii
Buff-breasted Sandpiper Tryngites subruficollis
Great Skua Catharacta skua
Ancient Murrelet Synthliboramphus antiquus - A number have been reported at Penghu and eastern coast in recent years.
Orange-breasted Green Pigeon Treron bicincta
Black-chinned Fruit Dove Ptilinopus leclancheri
Koel Eudynamys scolopacea - Reported almost annually, though usually taken to be escapees.
White-collared Kingfisher Halcyon chloris - Recorded in Penghu in a recent year.
Citrine Wagtail Motacilla citreola - Reported almost annually in recent years.
Japanese Pied Wagtail Motacilla grandis
Tiger Shrike Lanius tigrinus
Chinese Great Grey Shrike Lanius sphenocercus - Reported at Yehliao, Taipei in 1997.
Pallas' Grasshopper Warbler Locustella certhiola
Yellow-rumped Flycatcher Ficedula zanthopygia
Great Tit Parus major - More often reported on offshore islands like Kinmen or Matsu.
Siberian Meadow Bunting Emberiza cioides
Common Redpoll Acanthis flammea
Collared Crow Corvus torquatus - Fairly common resident in Kinmen National Park.

Leach's Storm Petrel Oceanodroma leucorhoa
Fork-tailed Storm Petrel Oceanodroma furcata
Red-footed Booby Sula sula - One was reported  in Kaohsiung in 1998.
Steller's Sea Eagle Haliaeetus pelagicus
Brahminy Kite Haliastur indus
Slender-billed Curlew Numenius tenuirostris
Pectoral Sandpiper Calidris melanotos
Least Sandpiper Calidris minutilla
Pomarine Skua Stercorarius pomarinus
White-fronted Scops Owl Otus sagittatus
Pied Wheatear Oenanthe pleschanka
Grey-headed Canary Flycatcher Culicicapa ceylonensis
Dark Rosefinch Carpodacus nipalensis
Red Crossbill Loxia curvirostra
House Crow Corvus splendens
Carrion Crow Corvus corone
Azure-winged Magpie Cyanopica cyana - Presumed to be escapees.
Bohemian Waxwing Bombycilla garrulus - Possibly escapees, though reported during migration in recent years.
Black-necked Starling Sturnus nigricollis - Presumed to be escapees.

Laysan Albatross Diomedea immutabilis
Red-faced Cormorant Phalacrocorax urile
Amur Red-footed Falcon Falco amurensis
Flame-bellied Minivet Pericrocotus ethologus
Pine Bunting Emberiza leucocephala
Lapland Bunting Calcarius lapponicus - Reported for a number of consecutive winters in Taipei County.

Please see also Desmond Allen's "Comments (Version 4)" on the taxonomy of Taiwan's birds.