Chestnut-bellied Imperial-Pigeon

A beautiful, glossy, dark blue swallow found primarily near rivers, streams, and other water bodies. The dark blue body can appear black at a distance, and contrasts starkly with the bright white throat. Calls consist of soft, high-pitched twitters.

Rather large, blue-and-gray jay of highland pine and pine-oak forest endemic to highlands of central Mexico; occurs in transvolcanic belt from Volcánes de Colima in the west to Volcán Orizaba in the east. Typically travels in wide-ranging flocks of 5–25 birds, mainly at middle to upper levels in trees. Appreciably larger and broader-winged than Woodhouse's Scrub-Jays, with plainer plumage (lacks dark mask, whitish eyebrow, and partial dark collar of Woodhouse's Scrub-Jay). Noisy calls carry well.

A large canopy honeyguide that is far more often heard than seen, although it does sometimes descend lower, almost to ground level. When seen, its greenish upperparts contrast with its pale olive underparts to give it a two-toned appearance. Belly is pale with flank streaking, and the distinctive tail has white edges and feathers that curve outward, giving it a lyre shape that is most noticeable in the males. Males perform aerial displays high overhead in which they quickly open their wings and tails to create a two-parted sound like a bow on a string that gradually grows louder, “huhwa, huh-wa, HUH-WA.” Despite its distinctive displays, the bird can be frustratingly difficult to locate and see.