Black-billed Thrush

Handsome small seabird of Humboldt Current; not seen from shore, but breeds inland in Atacama Desert where it visits colonies at night to avoid predators. Plumage unlike all other storm-petrels, with black cap and collar, and white underparts contrasting with dark underwings. Upperparts also striking, with black cap, strong upperwing pattern, and gray tail (no contrasting white rump). Larger than most storm-petrels in its range, but size similar to Markham’s and Black Storm-Petrels, with which it readily associates.

Large antbird with a very distinctive, robust upturned bill. Males are all black and females are chestnut with a black throat patch. An apparently naturally rare inhabitant of the dense understory of humid forests, where it forages at lower levels, favoring areas with Lepidocaryum palms. The song is a series of musical whistles “tree-tree-tree,” repeated for long periods.

A medium-sized typical ‘double-collared’ sunbird with a long bill. Male has a very broad red breast band, bluish-violet rump patch, and a dusky belly. Female is dull gray-brown. Pairs and singles are common but extremely local in highland forests and thicket edges, restricted to distinct regions that perhaps represent three separate species: the Angolan scarp; Nyika Plateau of Malawi; and the Eastern Arc, Tanzania. Larger, with a broader red breast band on the male, than either Eastern Miombo or Forest Double-collared sunbirds; the latter also has an olive (not dusky) belly. Has a typical jumbled sunbird song.