Brown Tinamou
Crypturellus obsoletus
The brown tinamou is approximately 25 to 30 cm (9.8–11.8 in) in length and it weighs about 350 to 550 g (12–19 oz). Depending on the subspecies involved, the upperparts vary from dark sooty-brown to bright chestnut and the underparts, which usually are paler than the upperparts, vary from chestnut to light ochraceous. The subspecies griseiventris is unique in having pale buff-grey underparts. All subspecies can be separated from the superficially similar little tinamou by the greyish (rather than whitish) throat. Females are typically larger and more rufescent than the males.
ID text from Wikipedia, CC BY-SA 4.0

Thicket Tinamou
Crypturellus cinnamomeus
The thicket tinamou is 27 to 29 cm (11–11 in) in length and weighs 440 g (16 oz). Its upper parts are brown, heavily barred blackish on back, rump and wings. Its lowerparts pale brown, cinnamon on breast, greyer on belly and undertail whitish with dark barring. Its head brown with prominent buff supercilium and well-defined ear covert patch with bill brownish and legs red in color.
ID text from Wikipedia, CC BY-SA 4.0
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