Andean Guan
Penelope montagnii
These are medium-sized birds, measuring about 40–58 centimetres (16–23 in) in length and weighing about 500–840 g (1.1–1.9 lb). They are long-bodied with thin necks and small heads, and similar in shape to turkeys but more slender and elegant. The plumage is overall brown with whitish edging to the feathers of the head, neck and chest. It has a red dewlap and reddish legs. In the Conover Collection of the Field Museum, there is a hypopigmented female specimen of the subspecies atrogularis taken December 20, 1929, at Pucará (west Ecuador).
ID text from Wikipedia, CC BY-SA 4.0

Dusky-legged Guan
Penelope obscura
The bird measures an average of 73 centimeters in length and weighs an average of 1.2 kilograms, being very similar in appearance to its smaller relative, the rusty-margined guan (P. supercilliaris).
ID text from Wikipedia, CC BY-SA 4.0
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Play today's Daily BirdPhotos and recordings are credited to their authors under the licence shown. Full profiles: Andean Guan and Dusky-legged Guan.