Modern birds capable of flight all have a specialized wing structure called the propatagium without which they could not fly. The evolutionary origin of this structure has remained a mystery, but new ...

With the development of bionic birds in the field of aviation, research on high bionic performance of bionic birds has increasingly become the mainstream of related scientific research fields. Most ...

At first glance, bats and birds appear remarkably similar. Both dominate the skies, possess wings, and have evolved the ...

Form—function relationships are one of the pillars of biodiversity. Morphological features have diverged in size and shape among lineages and impart different abilities to interact with the ...

Bird physiology is conducive to flight: small size, hollow bones, and generally symmetrical feathers on the wings and tail. It seems like a no-brainer that bird evolution was optimized for flight, but ...