Chestnut-winged Chachalaca
Ortalis garrula
The chestnut-winged chachalaca is 53 to 60 cm (1.7 to 2.0 ft) long. One male weighed 755 g (1.7 lb) and a female 630 g (1.4 lb). Both sexes have brown upperparts that are lighter on the crown and nape; the tail is dark gray-brown with a white tip. The throat and upper breast are also brown with a sharp demarcation between it and the white lower breast, flanks, and belly. The primary flight feathers are bright chestnut. The eye is surrounded by bare reddish to black skin. Voice: The chestnut-winged chachalaca is vocal throughout the year (mostly at dawn) but more so during the breeding season. The most commonly heard sound is a duet rendered as "wha-cha-rá" that carries a great distance.
ID text from Wikipedia, CC BY-SA 4.0
Rufous-headed Chachalaca
Ortalis erythroptera
The rufous-headed chachalaca is 56 to 66 cm (1.8 to 2.2 ft) long and weighs 620 to 645 g (1.4 to 1.4 lb). It has a rufous head and neck and gray-brown back. The central tail feathers are dark gray and the outer ones gray near the body and chestnut on their outer halves. The lower breast and belly are creamy white. The primary flight feathers are bright chestnut. Its brown eye is surrounded by bare bluish gray skin. The legs are pale blue. Voice: The rufous-headed chachalaca is most vocal from before dawn into the early morning. Its principal call is a "raucous, repeated 'kwak-ar-ar-ar', 'cha-cha-kaw' or shriller 'kra-kra-kra'", and is usually initiated by the male. Pairs give several calls "including a soft cooing or clucking, harsh 'cow', and fast, repeated 'kawuck'."
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: Chestnut-winged Chachalaca and Rufous-headed Chachalaca.