Feathers are among the most complex cutaneous appendages in the animal kingdom. While their evolutionary origin has been ...

For over a century, astronomers have marveled at the beauty and complexity of spiral galaxies, which feature arms covered in ...

Feathers belonging to a griffon vulture that died around 30,000 years ago have become the first fossils of their kind, ...

Scientists now believe that feathers didn’t just appear suddenly in birds. Instead, they evolved step by step from much ...

Inhibiting the sonic hedgehog (Shh) pathway strongly perturbs feather development in chickens by restricting feather bud ...