Because their wings and wing muscles are too under developed. So are their feathers.
penguins cant fly, and chickens cant propperly fly!
Yes, but not long distance!
It cant walk
fruits cant fly...........
no he cant fly he is to heavy
you cant fly it is not posibble
you cant fly it is not posibble
till it cant fly
Penguins cant fly.
batman cant fly he glides using his cape so no he cant
He cant fly because his balance would be bad, they cant fly
you cant...... -_-