Chocolate Boobook

Large pigeon of marshy savannas, riversides, open areas with scattered trees, locally even in towns, such as Villahermosa, Mexico. Gray head contrasts with pinkish body, and whitish belly does not contrast strongly with plain grayish tail; compare darker Red-billed Pigeon, which often occurs in same areas but prefers drier and more forested habitats. Also note black bill of Pale-vented, and subtly distinctive song: after long introductory coo, repeated phrase is typically a 3-syllable "who’koo-koo", unlike 4-syllable "oo’koo-koo-koo" of Red-billed.

Charming tiny bird, brightly-colored but difficult to see as it forages quietly in dense undergrowth. Olive-yellow above and dark gray below, with a dark line through the eye and a bright yellowish crown. The very similar Gray-bellied Tesia has a paler belly, a distinct yellowish eyebrow, and a darker greenish crown. Slaty-bellied breeds in foothill and montane forest and winters at lower elevations. Frequents dark damp areas, often near streams or fern beds. Song is a series of high thin whistles followed by a jumble of warbled notes, longer and more complex than Gray-bellied Tesia’s similar song. Gives sharp chirping call notes, as well as loud rattles.

This behemoth is unmistakable solely due to its massive size, much larger than any other raptor or vulture. Adults are black with a white stripe on the underwing and an orange head. Wingtips are splayed into conspicuous fingertips. Young birds are duller with a gray head and only slightly paler stripe on the underwing. Found in very small numbers in coastal hills and mountains of California and around the Grand Canyon. Usually seen soaring singly or in pairs. Critically endangered; only recently has this species started breeding successfully again in the wild.