Dusky legged guan
is a species of bird in the Cracidae family, the chachalacas, guans, and curassows. It is found in northeastern Argentina, Uruguay & southernmost areas of Paraguay & Brazil. It eats fruit, flowers and buds taken from the ground or plucked from tree branches.
image from http://www.hbw.com/ibc/species/dusky-legged-guan-penelope-obscura