コシギダチョウ Crypturellus soui

Furtive, almost tailless small game bird that lives on the ground in humid tropical lowlands. Favors forest edge and dense secondary growth rather than forest interior. When disturbed runs rather than flies. Very rarely seen (sometimes crosses quiet roads or trails), but tremulous whistles are often heard, especially early and late in the day. Plumage is dark brownish overall with grayer head and whitish throat.