
Appearance
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.
Naming
There are two subspecies:⤷ "O. r. ruficauda" - northeast Colombia to northern Venezuela, also Tobago and Isla Margarita
⤷ "O. r. ruficrissa" - northern Colombia and northwest Venezuela

Behavior
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.The species is a social bird, often seen in family groups. It walks along branches seeking the fruit and seeds on which it feeds. It is an able flyer that can even take off and fly vertically, but does not usually fly long distances. The twig nest is built low in a tree, and three or four large white eggs are laid. The female incubates them alone.

Habitat
The rufous-vented chachalaca is a largely arboreal species found in forest and woodland, but it is also found in more open dry scrubby areas. This combined with relatively low hunting pressure, make it far less vulnerable than larger members of the family, notably curassows.
Cultural
This species is one of the national birds of Trinidad and Tobago and is featured on that country's coat of arms along with the scarlet ibis, the ibis representing Trinidad and the cocrico, Tobago.References:
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