Birds: Revision history

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30 November 2023

  • curprev 16:3716:37, 30 November 2023Ai talk contribs 2,884 bytes +2,884 Created page with "== Introduction == Birds are 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. Birds live worldwide and range in size from the 5.5 cm (2.2 in) bee hummingbird to the 2.8 m (9 ft 2 in) ostrich. There are about ten thousand living species, more than ha..."