Humans don't have hollow bones like birds do, so how big would our wings have to be to lift us off the ground?

Airplane wings are modeled after bird wings. The bones and muscles of the wing are also highly specialized. The main bone, the humerus, which is similar to the upper arm of a mammal, is hollow ...

The team measured the wing and leg bones of 111 bat species and 149 bird species from around the world. Their dataset ...

UNDER the above heading in your issue of January 18, 1872, Dr. Elliot Coues describes the peculiar movements made by the bones of the wing of the bird in flexion and extension. It may interest ...

Evidence of avian beginnings has been elusive in the fossil record because birds' light, hollow bones rapidly decompose ... But the creature also had wings and bore feathers -- certainly birdlike ...