Samples of the dorsal (middle column) and ventral (left column) sides of wings from bird specimens analyzed ... and the magnitude of variation across different parts of the consensus wing ...

Some birds like penguins instead use their wings for swimming in water. Discover more about the many different types of birds found around the world with Cam and Sophie the barn owl from One Zoo ...

However, when looking at the correlation across legs and wings, results are different: Bird species show little to no ...

Two male Rodrigues solitaires fight over a female in the background using club-like wings The extinct ... But the two birds were really subtly different evolutionary outcomes to similar selective ...