Colombian Chachalaca
Ortalis columbiana
The Colombian chachalaca is a typical Ortalis species – a large, plump forest bird with a long slender neck, small head, long and robust legs (tarsi) and a long tail. Size. Adults of this species have a length of 50–60 cm. The average wing length is 22.5 cm (males)/ 19.6 cm (females), and the average tail length is 25 and 24 cm respectively. Tarsi average 6 cm (males) and 5.8 cm (females). Adult bird have a typical mass of 600g (male), and 500g (female). Appearance. Similar/identical for both sexes. The upperparts are mostly brown, shading to greyish-brown on the primaries and secondaries.
ID text from Wikipedia, CC BY-SA 4.0
Grey-headed Chachalaca
Ortalis cinereiceps
The grey-headed chachalaca is a medium-sized bird, similar in general appearance to turkeys, with a small head, long strong legs, and a long broad tail. They are 48 to 58 cm (1.6 to 1.9 ft) long and weigh 490 to 540 g (1.1 to 1.2 lb). They have fairly dull plumage, grayish brown above and paler below. The head is dark grey with a red dewlap and the blackish tail is tipped with buff. Their primary flight feathers are bright chestnut. Juveniles are browner overall, especially on the head. Voice: The grey-headed chachalaca is less noisy than plain (O. vetula) or rufous-vented chachalacas (O. ruficauda). Its song is a soft "cha-cha-lac-ah". Flocks give raucous calls described as "kloik, kleeuk kraahk". It also makes a variety of screams, sharp alarm calls, and a quiet purr.
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: Colombian Chachalaca and Grey-headed Chachalaca.