How do bird bones and mammal bones differ?

The answer is that bird bones are denser than mammal bones, which makes them heavy even though they are thin and sometimes even hollow.

Explanation:

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(brainliest please, if possible)

The answer is that bird bones are denser than mammal bones, which makes them heavy even though they are thin and sometimes even hollow.

Explanation:

What this means is that the birds bone are made for flight. That is the reason that they are more dense.

Hope this helps =)