Marbled Wood Quail
Odontophorus gujanensis
Adult marbled wood quails grow to a length of between 23 and 29 cm (9 and 11 in). The bill is stout and dark-coloured and the legs and feet are bluish-grey. The iris of the eye is brown and there is orange or red bare skin around the eye. The sexes are similar in appearance; the front of the crown and cheeks are reddish-brown and the dark brown, vermiculated feathers on the crown are ruffled to form a short, loose crest. The mantle and neck are greyish-brown, the back and wings are brown with black vermiculations and the rump and upper-tail coverts are indistinctly spotted with paler colour.
ID text from Wikipedia, CC BY-SA 4.0

Spot-winged Wood Quail
Odontophorus capueira
Male and female spot-winged wood quails are similar in appearance but the female is slightly smaller. The bird has a reddish-brown crown with a loose crest, speckled with buff. The supercilium (stripe above the eye) and the chest-band are reddish-cinnamon. The upper parts are greyish-brown, with dark vermiculations and speckling, with the individual feathers on neck, mantle, back and scapulars having white streaks beside the shaft. The sides of the head, throat and underparts are slatey-grey. The legs are dark grey, the bill is blackish, the iris brown and the bare area around the eyes red.
ID text from Wikipedia, CC BY-SA 4.0
Where you might meet both
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Play today's Daily BirdPhotos and recordings are credited to their authors under the licence shown. Full profiles: Marbled Wood Quail and Spot-winged Wood Quail.