Diversity of Bird Fauna
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Birds are formally classified as members of the class Aves, subphylum Vertebrata, phylum Chordata, Kingdom of Animalia. They are characterized as being generally small vertebrates with feathers, scaly legs and no teeth (except in few fossil forms). They have well developed air breathing lungs, a four chambered heart and maintain a constant body temperature of about 380C - 440C. At present, biodiversity is better understood for birds in many respect than any other major group of organisms because they probably inspire more interest in humans, are often spectacular,relatively easily observed and...