Chaco Chachalaca vs Rufous-vented Chachalaca

Chaco Chachalaca

Ortalis canicollis

Large539 gWoodland

The Chaco chachalaca is 50 to 56 cm (1.6 to 1.8 ft) long and weighs 479 to 678 g (1.1 to 1.5 lb). The nominate subspecies' head, back, and breast are gray and the belly tan to brown. It has bare pinkish red skin around the eye. O. c. pantanalensis is browner and the facial skin is more purplish than pinkish. Voice: The Chaco chachalaca's principal vocalization is given in the early morning, a "harsh, raucous 'chata-ra-ta'...or 'bink, ka chee chaw raw taw, chaw raw taw, chaw raw taw'.

ID text from Wikipedia, CC BY-SA 4.0

Photo: Nicolas Olejnik · CC BY 4.0

Rufous-vented Chachalaca

Ortalis ruficauda

Large586 gWoodland

These are medium-sized birds, similar in general appearance to turkeys, with small heads, long strong legs and a long broad tail. They are typically 53–58 cm long; the female weighs 540g and the larger male 640g. They have fairly dull plumage, dark brown above and paler below. The head is grey, and the brown tail is tipped rufous or white depending on race. Voice: As other chachalacas, the rufous-vented chachalaca is a very noisy species, preferring to execute their vocal feats at dawn. The male's call is a loud low ka-ka-rooki-rooki-ka, answered by the female's high-pitched watch-a-lak, which they often repeat several times in a row, in precise synchronization.

ID text from Wikipedia, CC BY-SA 4.0

Photo: Aitor · CC BY 4.0

Photos and recordings are credited to their authors under the licence shown. Full profiles: Chaco Chachalaca and Rufous-vented Chachalaca.