How Do Birds Fly

How Do Birds Fly

Most birds are capable of flying. Birds can also walk, run, or hop on the ground. Some birds like swan and duck can even swim in water.

The following features help birds to fly.

1. 1. Birds have streamlined bodies, which make it easier for them to move through air.
   2. Their bones are hollow, which make them lightweight.
   3. They have wings, which help them to fly.
   4. They have powerful chest muscles, which help them flap their wings during flight. Figure shows how most birds fly.