BIODIVERSITY AND BIRD’S Birds, additionally called Aves or avian dinosaurs, are a group of endothermic vertebrates, characterized by feathers, toothless beaked jaws, the laying of hard-shelled eggs, an excessive metabolic fee, a four-chambered coronary heart, and a robust yet lightweight skeleton. Birds live international and variety in size from the 5 cm (2 in) bee […]

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