Female tits performed the wing-fluttering gesture more often, after which their male mate usually entered the nest box. This happened even when the gesturing bird arrived at the box first.

Bird wings and legs evolve independently, while bat wing and leg proportions are integrated. Credit: Nature Ecology & Evolution (2024). DOI: 10.1038/s41559-024-02572-9 ...

A new robotic bird made with real pigeon feathers is the first robot that can change the shape of its wings like a bird, by fanning its feathers out or folding them closer together.

Two tiny bird wings were encased in amber. They were 99 million years old, but they looked as though they could take flight any minute: delicate bones were arched in the middle of the wings and ...

Bird wings and legs evolve independently, while bat wing and leg proportions are integrated. Credit: Nature Ecology & Evolution (2024). DOI: 10.1038/s41559-024-02572-9 ...