Greenish Tyrannulet

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.

An unusual and colorful rainforest bulbul. The upperparts are dark olive-green and the underparts yellow. Note the bright yellow patch between the bill, the brown eye, and the yellow spots on the tail corners. Found in the understory of rainforest and lush secondary habitat. Sometimes joins mixed-species flocks and follows ant swarms. Similar to Red-tailed Bristlebill, but easily separated by the green tail and the yellow spot on the face. The calls are chirpy notes typical of bulbuls, and the song is a variable descending series of melancholy whistles.

Not the only blue nuthatch, but the bluest nuthatch. Unmistakable, with a dark head, pale eyering, white throat and breast, and dark-lined pale blue feathers on the wings. Gives quick, sharp, nasal “tzwp” or “tzwit” notes. Clambers up and down tree trunks, often in small parties; frequent member of mixed-species foraging flocks. Favors montane and hilly forests.