Birds are winged, bipedal, warm-blooded, egg-laying, vertebrate animals. They arose in the late Jurassic period, it is widely believed that they evolved from theropod dinosaurs, mainly Dromaeosaurids. Birds continue to thrive into the present and beyond. There have been many species of birds across their evolution, some being small and harmless while some are large predators, making them a very diverse family.
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