Flying insects, such as flies, butterflies, and dragonflies, have thin, membranous wings that they move by altering their body shape. Birds possess strong wings made of bone and muscle ...

"If insects had not evolved this very improbable joint to flap their wings, the world would be a very different place, absent of flowering plants and familiar creatures like birds, bats—and ...

If you look closely at any insect, they all have six legs. Insects also have wings which some of them use to fly with. Look at this pretty butterfly flapping its wings and flying along.

They were significant predators on fish and squid, or insects, or small reptiles, depending on their size and habitat. They were warm-blooded, walked on two legs, and flew on membranous wings that ...