Hydration‐Induced Shape and Strength Recovery of the Feather

As necessary appendages to the bird wing for flight, feathers have evolved to address the requirements of aerial locomotion. One of the recently discovered, fascinating aspects of this is their ability to recover shape and strength with hydration. This feature significantly enhances the effectiveness of a bird's flying capability as it allows for the natural restoration of feathers damaged by predators or other external forces. Herein, this...