Add Yahoo as a preferred source to see more of our stories on Google. The right side of Bald Eagle 390’s beak as of March 24, 2025. A protein called keratin is showing signs of growth, following ...

Yet the eaglet still faced a major problem. The growth had caused a malformation of its developing beak. Its upper and lower beak were misaligned, so the bird could not eat on its own or preen itself.

Bird beaks come in all shapes and sizes. The variation allows different species of birds to feed on different things. This can help reduce the need to compete for resources when birds live in the same ...