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

The author is at his best when describing those attributes of the bird's wing which he has obviously studied at first-hand; he is not quite so convincing when translating the behaviour of the wing ...

Elliot Coues describes the peculiar movements made by the bones of the wing of the bird in flexion and extension. It may interest some of your readers to know that those movements were minutely ...

They were totally gone. The feathers had been cut almost all the way to where they connect to the bone... And the tail is ...

The northern goshawk, known for its agility and precision, has directly influenced the development of morphing wings and tails in drones like the LIS Raptor. By mimicking the bird’s ability to ...