Macaws
Macaws are small to large, often colorful New World parrots. 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 Mexico, Central America, South America, and formerly the Caribbean. Most species are associated with forests, especially rainforests, but others prefer woodland or savannah-like habitats.
Large, dark (usually black) beaks, and relatively bare, light coloured, medial (facial patch) areas distinguish macaws. 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, or Hyacinth Macaw. A macaw's facial feather pattern is as unique as a fingerprint.
Some of the macaw species are known for their impressive size. The largest
parrot in length and wingspan is the Hyacinth Macaw. The heaviest macaw is the
Buffon's, although the heaviest parrot is the flightless Kakapo. While still
relatively large parrots, the 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 backwards
Text from Wikipedia
