Why do birds fly ?

Question

Why do birds fly ?

Answer 1

Because it's faster than walking

Answer 2

because they have hollow bones and light organs

the shape of the wing also helps there hert is super durable for there size wich alows them to get more energy to the muscles faster

they first began jumping tthen the adapted to leap and flap to go longer then they adapted to leap flap wings to go up and fly

Answer 3

Because they have wings and know how to use them?

Answer 4

The birds are only enjoying the god's gift,I think.

Answer 5

Cause they want to!

Answer 6

Its generally a lot faster than running for most of them; though not all of them.

But most don't have legs strong enough to outrun say, a cat, or something like that.  But they do have wings that can get them up into the air away from where the cat can reach.

But that is generally only for the ones that can fly; the others are better designed for swimming or running.

Answer 7

They cant walk because the legs are to short.. so they fly..

Answer 8

why do people walk?

Answer 9

It's a mechanism of defense.

  They may even like it,although chickens are dead beats.