About Crypturellus obsoletus (Temminck, 1815)
The brown tinamou (Crypturellus obsoletus) is approximately 25 to 30 cm (9.8–11.8 in) long, and weighs around 350 to 550 g (12–19 oz). Upperpart coloration ranges from dark sooty-brown to bright chestnut across different subspecies, while underparts (which are typically paler than the upperparts) range from chestnut to light ochraceous. The griseiventris subspecies is set apart by its unique pale buff-grey underparts. All subspecies can be distinguished from the similar-looking little tinamou by their greyish throat, rather than the little tinamou's whitish throat. Females are generally larger and more rufescent than males. The brown tinamou occurs in northern Venezuela, Colombia, Ecuador, Peru, northern and southern Brazil, extreme northeastern Argentina, eastern Bolivia, and eastern Paraguay, and may also be present in Uruguay. It inhabits tropical and subtropical moist lowland and montane forests, and prefers elevations between 1,300 and 2,900 m (4,300–9,500 ft).