Bird

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Bird (bûrd)

Bird (pronounced: /bɜːrd/) is a term used to describe a group of warm-blooded vertebrates constituting the class Aves, characterized 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.

Etymology

The word "bird" comes from the Old English "brid," which means "chick, hatchling."

Related Terms

  • Avian: Pertaining to birds.
  • Ornithology: The scientific study of birds.
  • Feathers: The distinctive outer covering of birds.
  • Beak: The hard, projecting part of a bird's mouth.
  • Egg: The hard-shelled reproductive body produced by birds.
  • Metabolism: The chemical processes occurring within a living cell or organism that are necessary for the maintenance of life.
  • Heart: The organ in birds that pumps blood through the body.
  • Skeleton: The internal framework of birds, made up of bones and cartilage.

See Also

External links

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