Black-bellied Tern

Deep purplish-red broadbill with bold yellow patches on the wings and tail. Broad-based bill and irises are bright blue. Female is slightly duller than the male, and lacks a black line across the chest. Favors riparian and wet forests from the lowlands up into montane areas, and will visit edges, gardens, and parks. Forages in the canopy, often flying from a perch to do so. More vocal than Black-and-yellow Broadbill, giving long, drawn-out whistles and buzzing trills.

Nest parasite that lays its eggs in the nests of Red-billed and Brown firefinches. Breeding males are glossy black, while females and non-breeding males are streaky and brown on the back and pale below, with a bold facial pattern. The color of the bill is red in southeast Africa and whitish in western, northern, and central Africa. Found in savanna, scrub, farmland, and towns. Mimics the vocalizations of its host firefinches: low rattling series and high-pitched whistled notes. In southeast Africa, can be separated from other indigobirds by its red bill. Very similar to other indigobirds elsewhere on the continent. Breeding males can be separated by their all-black wings that lack a pale brownish panel. The mimicked vocalizations of its host species can also help confirm identification. In non-breeding plumage, similar to non-breeding Pin-tailed Whydah but separated by red legs.

A small lemon-olive finch with a gray patch in front of the eye. Female is smaller, duller, and streakier than the male. Juvenile resembles female but is browner and streakier. An abundant endemic throughout Nightingale Island and small adjacent islands, preferring tussock grass. Male’s song is high-pitched and sharp, an often repeated “wheet-whuu”; female answers with a whistle. The much larger and rarer Wilkins’s Finch has a deep grosbeak-like bill and a slower song, and is more restricted to wooded parts of the island than Nightingale Island Finch.