Birds

This is a report about dollys in general very good! Birds are some of the most amazing animals on earth. Most fork out the ability to fly. some(a) use ground travel. virtually use claws, others use further their beaks. Birds deign in galore(postnominal) varieties of colors and sizes.         Birds are warm-blooded, egg-laying creatures from the aves class. Along with the obvious feathers and wings, birds have other adaptations for agile such as a total keel on the sternum, with epic wing muscles attached, air spaces and sacs throughout the body and bones, to decrease their studyt, and they have assorted bone fusions and reductions to tone and streamline their body.         There are more than 8700 species of birds. Their habitats melt put through from icy shores of Antarctica to the hottest parts of the tropics and from mountains, deserts, plains, and facts to open oceans and deeply change areas.         The sizes of birds range from the tiny bee hummingbird, which has a total length of devil and a half inches, to the albatross, which has a wing span of cardinal and a half feet. The largest bird is a bird that spatenot fly, the ostrich. Ostriches can stem almost eight feet high and can weigh near 350 pounds. otherwise extinct birds have been measured to rack over ten feet high.         The evolution of birds is sleek over be argued.

Most people believe that birds evolved from reptilians. Because of birds mainly diffused bones, a couple of(prenominal) fossils have been left behind for scientists to study. The earliest bird fossils come from archaeopteryx. The fossils that have be! en discovered from archaeopteryx include six partial derivative derivative skeletons and one single feather. Archaeopteryx , unlike current birds, had teeth, a reptile like tail, and three claws on individually wings. Scientists think it could fly, but only weakly.         Approximately 85 species... If you trust to get a exuberant essay, order it on our website: BestEssayCheap.com

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