Great Tinamou

The great tinamou is a large species of tinamou, measuring in total length at approximately 38 to 46 cm (15 to 18 in), with a mean of 44 cm (17 in), and weighing from 700 to 1,142 g (1.543 to 2.518 lb) in males, with a mean of 960 g (2.12 lb), and from 945 to 1,249 g (2.083 to 2.754 lb) in females, with a mean of 1,097 g (2.418 lb). Despite its name and large size and shape, which may be suggestive of a large pheasant or a small turkey, it is not necessarily the largest species of tinamou, as it is rivaled or exceeded by other species in the Tinamus. It ranges from light to dark olive-green in color with a whitish throat and belly, flanks barred black, and undertail cinnamon. Crown and neck rufous, occipital crest and supercilium blackish. Its legs are blue-grey in color. All these features enable great tinamou to be well-camouflaged in the rainforest understory. The great tinamou has a distinctive call, three short, tremulous but powerful piping notes which can be heard in its rainforest habitat in the early evenings.

The great tinamous has the highest percentage of skeletal muscle devoted to locomotion among all birds, with 56.9% of its total body weight (43.74% of its body weight is skeletal muscle devoted to flight), at the same time, its heart is the smallest of all birds, in relative comparison (0.19%).

Great tinamou lives in subtropical and tropical forest such as rainforest, lowland evergreen forest, river-edge forest, swamp forest and cloud forest at altitudes from 300 to 1,500 m (1,000–4,900 ft). Unlike some other tinamous, the great tinamou isn't as affected by forest fragmentation. Its nest can be found at the base of a tree.