Usambara Double-collared Sunbird

The smallest loon, with a slender neck and bill. Often holds the thin bill at an upward angle. In breeding plumage, note smooth gray head, brick-red throat, and dark back. In winter, dark cap and hind neck contrast with white face and throat. In flight, often lowers and raises head more than other loons; also note small feet. Juveniles can look quite dark with a smudgy gray neck and limited white throat. Often confused with other loons, especially Pacific and Arctic; note overall head and bill shape and less sharp contrast to the head pattern. Breeds on ponds in the Arctic tundra. Winters primarily on saltwater, but can use large lakes and reservoirs in migration. Sometimes gathers in loose flocks where food is plentiful.

Large, brown-backed, orange-breasted thrush with bold white wingbars. Found in the understory of middle- and high-elevation forest. Generally shy and scarce. The song is musical and typically thrush-like: a chatty and cheerful series of whistles. The call is a very thin, rising trill. Very similar to Abyssinian Ground-Thrush, but has a different pattern on the head: an olive crown, black bar below the eye, and a broken white eye ring.

This heavily marked thrush is easily identified when seen well. Females average duller than males, but both sexes have a dark cheek on an overall white face, brown upperparts (strongly rufous-tinted in males), bright rufous wings, and dark underparts densely marked with white chevrons. Much darker than scarce Naumann's Thrush, with which it may associate and sometimes hybridizes. Very vocal, delivering loud chattering notes in both songs and calls. Breeds in taiga, tundra, and steppelands; winters in forests, as well as open habitat such as forest edges and fields.