Dolphin Gull

A sparrow-like weaver. Red-hooded breeding males are distinctive, but females and non-breeding males are drab. A Comoros endemic that is found in and adjacent to humid forest on the western three islands, and in drier, scrubby lowland habitats on Mayotte. Plumage varies across the different islands. The most distinctive birds, on Grand Comoro, have much less red on the breast than other populations. Can be very similar to Red Fody. Breeding male Red-headed Fody lacks red on the back and belly, though molting male Red Fody can match this pattern. Females and non-breeding males very similar to Red Fody, but Red-headed Fody is larger, darker, and more greenish, with a longer, slightly curved bill. Also similar to female House Sparrow, but distinguished by the more olive-green coloration and the longer bill. Calls are high, silvery notes, given in long series as a song. 

Bold black-and-white wing patches are distinctive in flight. Nonbreeding birds are overall white below with warm brown and orange tones on head and back. During the breeding season they are white with black or gray on the back. Breeds on tundra at northern latitudes; forms flocks in the winter and moves south, often joining up with other species of field birds. Listen for distinctive tittering rattle and “tew” calls as they fly overhead. Foraging flocks also gives harsher buzzy calls.

Rare but spectacular eagle of lowland tropical forest. Very rarely seen perched, when black mask, orange-yellow base of bill, and short black crest are distinctive. In flight appears bright white below with a white head and blackish upperparts. The diagnostic, white leading edge of the inner half of the wing contrasts with the black upperside and can be seen in flight at long range. Does not call much when flying, unlike Black and Ornate hawk-eagles. Adult similar to pale immature Gray-headed Kite, but is larger and has orange base to bill.