Gray Tinamou Tinamus tao

Very large chicken-like bird, widespread across the Amazon basin, but nowhere common. Distinguished from other tinamous by entirely gray plumage with fine black barring on the upperparts and some white speckling on the head. Gray Tinamou is also larger than other large species such as Great and White-throated Tinamous. Favors areas of upland forest and is most often encountered by voice, a single, short hollow whistle given at long intervals.