Yes as birds with hollow bones cannot fly for longer whereas penguins do not have hollow bones and are able to swim in rough tides for ages. Also non-hollow bones are stronger and tougher than hollow bones.
it doesn't the lighter their wings are the easier they can fly
Birds are the only creatures that are warm blooded and have wings. Not all birds, however, have hollow bones - most flightless birds do not have hollow bones.
hollow bonesfeathersmuscular chests
its wings!
they are used for flying.... :)
it makes it lighter so it can fly easier penguins don't have have hollow wings and cant fly but they can swim better because they are less buoyant.
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!!!
no
Yes they are
Most birds have hollow bones. They are still strong, but lighter in weight.
Oil gets into their wings and stops them flying or swimming, so it can be fatal. The oil is very diffucult to get rid of.
They all have feathers and are made of hollow bones.