Ara nobilis
The smallest of the Macaws. The bird is primarily green, with red feathers under the wing. The Hahn has the distinctive macaw bald facial patch.
Hahn's Macaw is also known as the Red-Shouldered Macaw, especially in Europe. Rosemary Low argues in her "Complete Book of Macaws" that this bird should not be considered as a member of the genus Ara, but that it is really the only member of genus Diopsittaca. I have seen other books that agree with this.
There are at least two sub-species of this bird:
13 Inches (a little larger than a cockatiel).
Indeterminable by appearance.
n/a
This bird is more easily trained than the larger macaws, and is more often recommended as a house pet than the other macaws.
Can be loud.
Prices usually $500 - 750