Zoology or Animal Biology

Is a bird a mammal?

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Wiki User
2015-03-07 08:05:10

No, a bird is not a mammal because it lays eggs, it metabolizes

nutrients differently, they have a different digestive tract, and

they have lighter bones.

Actually you should ignore the fact that a bird lays eggs. A

platypus lays eggs and is a mammal, however, a bird is not a mammal

because a mammal feeds its young milk.

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Wiki User
2015-03-07 08:04:47

No, a bird is not a mammal. Although both birds and mammals are

warm-blooded vertebrates, mammals are in the class Mammalia and

birds are in the class Aves. Differences between the two include

the following:

  • Mammals have an outer covering of skin, fur or hair, while

    birds have a covering of feathers.

  • With the exception of the two monotremes, the platypus and

    echidna, mammals gve birth to live young, whereas all birds lay


  • All mammals (including the monotremes) nurture their young on

    mothers' milk.

  • All modern birds, even the flightless ones, have wings, whereas

    the only truly flighted mammal is the bat.

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