Question

the common features of birds​

Answer 1

Answer:

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Birds are a group of warm-blooded vertebrates constituting the class Aves /ˈeɪviːz/, characterized by feathers, toothless beaked jaws, the laying of hard-shelled eggs, a high metabolic rate, a four-chambered heart, and a strong yet lightweight skeleton.

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Answer 2

Explanation:

Birds can fly due to their light weight and hollow bones. They lay eggs. They are flying or flightless. they can be beautiful like peacock and ugly like crow. They build nests. They are omnivores. Some birds have hight speed like Pegerine Falcon and slow as a badger. they have very sharp eyesight and can see some colours invisible to our eyes.

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