Immature:
- White body plumage
- Blue-gray tips to the outer primaries visible from below when bird
is in flight
- Gray lores
- Black-tipped bill usually with blue-gray base, but occasionally
yellow or flesh
- In their first spring or first summer, immatures start gaining
the adults' dark plumage and can be mottled with blue-gray and
white
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Range:
- Eastern US to Peru and Argentina
- Marshes, swamps, rice fields, ponds, shores
- migration route through Mississippi valley
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