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 ...

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 ...

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