both wings have a lot of bones and humans dont have wings
Wings and Hollow Bones
a bird has hollow bones and an incect has an exo skeleton on the outside of their body!
Wings, hollow bones, and feathers.
The bones are hollow and make the bird light and he can fly by flapping his wings.
birds have hollow bones and wings; reptiles don't.
A bird gets lift by the four types of aerodynamics. Also because of its hollow lightweight wings and wing bones.
Bird's WingA bird wing is a ball of feathers, thin, hollow bones, and thin muscle's. The thin bones and muscle is so that the bird can fly through the air. The feathers are to help direct the bird though the winds. The birds wings act like arms. For us, if we moved our arms up and done at full extent it would be the same for the bird.the bird wings is made out of thin bones, thin muscles, and feathers. The thin bones and muscles are to help glide through the air. The feathers are to help guide the bird to where it needs to go.
Some energy source is required to overcome the unavoidable drag of pushing through the air, to lift the bird or airplane up to flying height, and to give the bird or airplane kinetic energy. Airplanes use propellers or jet engines. Birds use strong muscles in their breasts to flap their wings. In addition, bird wings are hinged, while airplane wings are riged and fixed. The bird uses its strong muscles to push its wings downwards, pushing air downwards, generating lift, and, if the wings are angled properly, also thrust. The big problem then becomes not pushing air back upwards when the bird moves its wings up for the return stroke. They have no teeth and hollow bones
Birds bones are particularly lightweight. The skeletal formation is light and strong with the exception of Frigatebird wherein its bones are only half the weight of its feathers.
anteaters are unable to fly because they do not have bones like a bird and they do not have feathers or wings to catch the air and glide
The "lift" is from the wing movement, but the real ability for a bird to fly is the fact that their bones are hollow and this makes them much lighter so that they can get lift-off.