Northern Beardless-Tyrannulet

A large cuckoo, distinctive in all plumages, but usually secretive, keeping to the interior of dense trees in many habitats, even inner cities and fields. Adult males glossy black with dull lime-green bill; females and immatures blackish brown with white dots on the wings and strong streaking on head and throat. Adults have ruby-red eyes. Females lay eggs in the nests of other large birds, including crows, shrikes, and starlings. Song is a loud, persistent “ko-EL!” similar to a peacock’s call.

A tiny purplish-blue bird with a chestnut cap, a soft pink belly, and a pale brow that is not always prominent, and more often grayish than white. Lacks the pale head of Crested Tit-Warbler. Breeds in high-altitude forests and scrub, but descends into foothills in the winter. Usually seen singly, in small flocks, or as a part of mixed flocks. Gives high crisp-sounding notes, usually in pairs.

A small seedeater with a sharp bill and a forked tail. The upperparts are olive-green and the underparts yellow. Males have a black face and plain yellow underparts. Females have a plain face, but are heavily streaked below. Found at middle and high elevations in a variety of habitats including forest edge, gardens, cultivation, moist scrub, and woodland. Usually in small flocks. Similar to Southern Citril, but there is virtually no overlap in range, and the male is easily separated by its black face. The song is a fast jumble of high-pitched twitters and whistles.