Red-backed Mousebird

Cryptic, seldom-seen nightbird of lowland and foothill forests. Unlike other small frogmouths, sexes are alike. Light morph is bright rufous with scattered white dots on the wings and mottled-white underparts. Dark morph is brown but with the same general patterning. Compare with Sunda Frogmouth: male Sunda is much more heavily marked with white above and has patchier markings on the underparts, while female Sunda has a prominent white band across the chest. Sumatran and Bornean Frogmouths inhabit higher elevations. Song is a loud “weeow-wah.” Calls include “weeow” and a rapid series of “wuk” notes that resembles a thrush’s alarm call.

A huge black hornbill with a prominent knob on the bill, conspicuous red “gills” on the sides of the beak, a turquoise-blue throat pouch, and a white tail. Males have a red casque and rufous neck, females a yellow knob and black neck. Juveniles resemble male, but with an entirely yellow casqueless bill. Found in pairs or groups in canopy of forested and wooded areas of lowlands and hills. Larger and more colorful than Sulawesi Hornbill. Gives powerful, short “krok” notes and a more drawn-out “oooo-aa-ooo-aaa.”

A slender, long-tailed bird of dense gallery forests and river islands in northern Brazil and extreme southwestern Guyana. Male is mostly black with tail feathers tipped white and with white scalloping on wings. Female is very different: brownish-gray above and buffy below, with a black tail and white throat streaked black. Like other Cercomacra, tends to stay concealed in dense vine tangles in the canopy and midstory, where it clambers slowly about, usually in pairs, searching for insects. Best detected by voice; two-noted song is given in series of 3–5 phrases, with hiccupping effect; similar to song of Gray Antbird but higher-pitched, faster, and less hoarse. Female is unlike any other species in range. Male is darker than Gray and Blackish antbirds, which do not occur in the same habitat and have different voices. Plumage recalls Dot-winged Antwren, but Rio Branco Antbird is considerably larger.