MACAW

Of the many different Psittacidae (true parrots) genera, six are classified as
macaws : Ara, Anodorhynchus, Cyanopsitta, Primolius,Orthopsittaca,
and Diopsittaca. Previously, the members of the genus Primolius
were placed in Propyrrhura, but the former is correct in accordance
with ICZN rules. Macaws are native to Central America and North America
(only Mexico), South America, and formerly the Caribbean.

Most species are associated with forests, especially rainforests, but others prefer
woodland or savannah-like habitats.
Proportionately larger beaks, long tails, and relatively bare, light-coloured,
medial (facial patch) areas distinguish macaws from other parrots.

Sometimes the facial patch is smaller in some species, and limited to a yellow
patch around the eyes and a second patch near the base of the beak in the
members of the genus Anodorhynchus.

A macaw's facial feather pattern is as unique as a fingerprint.
The largest macaws are the hyacinth, Buffon's (great green)
and green-winged macaws.
While still relatively large, macaws of the genera Cyanopsitta, Orthopsittaca
and Primolius are significantly smaller than the members of Anodorhynchus and Ara.
The smallest member of the family, the red-shouldered macaw, is no larger
than some parakeets of the genus Aratinga. Macaws, like other parrots,
toucans and woodpeckers, are zygodactyl, having their first and fourth toes
pointing backward.