The class of Vertebrata that includes the birds.

The class containing birds.

Clade of saurischian dinosaur, placed with the clades Theropoda, Tetanurae, and Avetheropoda, Coelurosauria, Maniraptoriformes, Maniraptora, and Avialae. Colloquially known as birds.

Birds; the class of animals that have wings and feathers, are warm-blooded, and lay eggs.

The Class in which all birds are placed.

The Latin word for "bird" and also the name of the class of animals that consists exclusively of birds. Purple Martins are in the class Aves, the order Passeriformes, the family Hirundinidae, and the genus Progne.