April 2002 Summary
April proved to be a quite superb month with regard to the variety and quality of the birds recorded at the reservoir. Highlights included the second Osprey of the year and a second Merlin being seen. Wildfowl were again well represented with a drake Wood Duck and a flock of Common Scoter being the cream of the crop. By the end of of the month nearly all the usual migrants had returned, and many of the resident birds were already nesting.
| Species | Highest Count | Date | Notes |
| Great Crested Grebe | 64 | 14th | At least four pairs nesting |
| Cormorant | 25 | 2nd | |
| Grey Heron | 5 | 3rd | |
| Mute Swan | 6 | 24th | Pair nesting-Flock of five present for the one day |
| Greylag Goose | 1 | 10th-15th | Presumed feral bird |
| Canada Goose | 25 | 3rd | Pair nesting |
| Wood Duck | 1 | 14th-16th | Drake-presumed escapee |
| Wigeon | 2 | 14th/19th | Pair |
| Teal | 18 | 14th | |
| Pintail | 1 | 14th-16th | Drake |
| Shoveler | 2 | 9th | Two drakes |
| Tufted Duck | 5 | 14th | |
| Common Scoter | 8 | 2nd | Five drakes and three ducks |
| Osprey | 1 | 16th | |
| Sparrowhawk | 2 | Both male and female seen on different dates | |
| Buzzard | 7 | 3rd | |
| Peregrine | 1 | Present on several dates | |
| Merlin | 1 | 10th | Female |
| Kestrel | 2 | Male and female present throughout month | |
| Moorhen | 3 | 1st | |
| Coot | 10 | 15th | At least two pairs nesting |
| Lapwing | 2 | 20th | |
| Snipe | 1 | 14th | |
| Common Sandpiper | 17 | 20th | First bird on 14th April |
| Black-headed Gull | 8 | 16th | |
| Herring Gull | c.65 | 2nd | |
| Lesser Black-backed Gull | 9 | 19th | |
| Stock Dove | 3 | 3rd | |
| Little Owl | 2 | 20th | |
| Green Woodpecker | 2 | 3rd/14th | |
| Great Spotted Woodpecker | 1 | 20th | |
| Skylark | 1 | 3rd | |
| Sand Martin | c.55 | 1st | |
| House Martin | c.30 | 28th | First bird on 15th April |
| Swallow | c.80 | 28th | First bird on 1st April |
| Grey Wagtail | 1 | 24th | |
| Stonechat | 2 | 8th | |
| Song Thrush | 2 | 15th | |
| Sedge Warbler | 1 | 22nd | First bird on 22nd April |
| Cetti's Warbler | 1 | Present most of the month | |
| Whitethroat | 2 | 24th | First bird on 24th April |
| Blackcap | 2 | 20th | First bird on 15th April |
| Chiffchaff | 6 | 21st | |
| Willow Warbler | 2 | 20th | First bird on 8th April |
| Goldcrest | 2 | 3rd | |
| Long-tailed Tit | 2 | 24th | |
| Nuthatch | 2 | 14th | |
| Treecreeper | 2 | 24th | |
| Jay | 3 | 20th | |
| Raven | 1 | 28th | |
| House Sparrow | 9 | 3rd | |
| Bullfinch | 4 | 14th/18th | Up to three pairs present |
| Yellowhammer | 1 | 3rd | |
| Reed Bunting | 2 | Present most of the month |