Giant Wood Rail
Aramides ypecaha
The giant wood rail is 41 to 45 cm (16 to 18 in) long, and possibly as long as 53 cm (21 in). Two females weighed 640 and 765 g (23 and 27 oz). The sexes are alike. Adults have a large mustard yellow bill, a red eye, and red legs and feet. Their face to their upper chest is bluish gray with a white chin. The back of their neck is rust red, their back olive, and their uppertail coverts and tail are black. Their flanks, breast, and belly are brownish pink. Juvenile plumage has not been described. Voice: The giant wood rail is highly vocal, calling during the day and evening. Several birds gather and "set up an astonishingly powerful, even deafening, chorus of screams, shrieks and wheezes".
ID text from Wikipedia, CC BY-SA 4.0
Slaty-breasted Wood Rail
Aramides saracura
The slaty-breasted wood rail is 34 to 37 cm (13 to 15 in) long; one male weighed 540 g (19 oz). The sexes are alike. Adults have a green bill with a bluish base, a red eye, and reddish- to yellowish brown legs and feet. Most of their head and their throat, breast, and belly are slate gray. Their nape and shoulders are chestnut, their back olive, and their tail black. Immatures and juveniles have not been described. Voice: The slaty-breasted rail mostly calls during the day. It makes a "ariety of loud, resounding, noisy cries, including 'po-quit kwaa kwaa kwaa', 'po-peek' and 'po-pereek'", often for many minutes and usually in a duet. Another vocalization is "an irritated, rapidly repeated series of 'quir' notes".
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: Giant Wood Rail and Slaty-breasted Wood Rail.