Question

How do the bones help the birds in flight?

Answer 1

Answer:

your answer

Explanation:

Their arms have transformed into wings to power them along. Instead of heavy jaws and teeth, they have lightweight beaks. And instead of fur, they have feathers. ... Their bones are also hollow (pneumatised) making them lighter for flight.

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Answer 2

The bones are hollow,so the birds body is light
The bony parts of the hind limbs are modified into ing
The fore limbs help it to walk and perch