Ferruginous Antbird

Essentially a tiny brown tennis ball supported by tiny chopsticks. Dark brown above with densely packed black-and-white scaling on the underside. Gives the impression of a tailless rodent as it makes its way furtively through dense shrubbery and leaf litter. Can be quite vocal and is jarringly loud for its size, giving single well-spaced piercing whistles on different high pitches, and occasionally an accelerating, usually rising rapid series of whistles. Also gives a sharp chip.

Skulking and generally inconspicuous brown bird of humid tropical forest. Found as singles or pairs, clambering in vine tangles or other dense understory, at times in leaf litter on the forest floor; usually difficult to see clearly. Note the rich buffy throat, conspicuous buffy eyebrow and eyering, and rusty tail on an otherwise plain dark brownish bird. Song is a descending series of nasal notes, speeding up and often sputtering at the end. Occurs from central Panama (where approaches the range of Fawn-throated Foliage-gleaner, and best distinguished by voice) throughout much of northern South America, to central Brazil.

A typical medium-sized brown-and-white buzzard that was only recognized as distinct in 2010. The underparts are whitish buff with heavily streaked underparts (lighter on the throat). Underwings display significant contrast, with pale primaries and secondaries standing out against black 'wrists' and rusty 'wingpits'. Juveniles are buffier and less heavily streaked. Uncommon resident endemic to Socotra, mostly between 150–800m, preferring ravines and cliffs; other buzzards are vagrants. Calls like other buzzards.