Birds are a group of warm-blooded vertebrates constituting the class Aves characterised by feathers, toothless beaked jaws, the laying of hard-shelled eggs, ...
Birds
Animal
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
Scientific name: Aves
Class: Aves; Linnaeus, 1758
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Lower classifications
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