Question

why do birds have hollow bones​

Answer 1

all birds, have hollow bones that make their bodies lighter. ... Thehollow part of a bird bone isn't wasted space. In some bones, the hollow cavities contain extensions of the air sacs from the lungs. These air sacs help the bird to get the oxygen it needs to fly quickly and easily.


hope it helps

Answer 2

Answer:

Birds have light hollow bones. Hollow bones make a bird light weight

Explanation:

Because of light weight birds can easily lift their body in air while flying. This means hollow bones help birds in flying.