The Life of Birds: Evolution and Diversity of Birds

Birds evolved from reptiles around 225 million years ago, with Protoavis as an early intermediary. Archaeopteryx, the oldest known bird with feathers, lived 150 million years ago. Modern birds retain some reptilian traits and inhabit diverse environments. There are nearly 9,000 bird species, classified into orders like Passeriformes, Piciformes, Charadriiformes, Falconiformes, and Anseriformes.

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