Birds can fly because they have wings, and also because they have hollow bones.
Humans can't fly because we don't have hollow bones or wings!
Because a Birds bones are hollow my science teacher also calls there bones spongy because they look like that from the inside. And since there bones are hollow it makes them less heavy i would guess and thats why they can fly!!!
Because they have wings and don't have solid bones.
because birds have wings with feather and a light bone.
It is not only birds that fly. Bats fly and they are not birds.
Most birds can fly. Not all.
To say that birds use wings and feathers to fly, so all birds can fly, would be false. Not all birds can fly. An ostrich is an example of a bird that cannot fly.
The birds that can fly because it is easier for them to find food.
all birds fly xept penguins
There is no such thing as a dinosaur that flys. The difference between a pteradoctyl and a bird is: Birds have feathers and pteradoctyl's don't. The difference between a oviraptor and a bird is: Oviraptor have hands and birds have wings.
Birds fly, fish swim
Birds Fly South was created in 2001.
When the Birds Fly South was created in 1945.
Birds do not fly all the way to the southern hemisphere, they fly to the equator.
maybe but how birds fly birds fly by using there wings becuse feather make the birds fly bye love u by your boyfreaind or girlfreaind
birds can fly because they have such small, light bones in their wings.