Birds are a group of warm-blooded vertebrates constituting the class Aves, characterised by feathers, toothless beaked jaws, the laying of hard-shelled eggs, a high metabolic rate, a four-chambered heart, and a strong yet lightweight skeleton. Wikipedia
Collective noun: colony, flight, flock
Scientific name: Aves
Class: Aves; Linnaeus, 1758
Term for young: chick, hatchling, nestling
Eaten by: Snake, Arctic fox
Domain: Eukaryota