Tag: waterproof
Waterproof feathers – Birds
"Like water off a duck's back", goes the common expression. When raindrops hit the "waterproof" feathers on a duck, they bead up and do not penetrate the feathers. How does this work?
"Like water off a duck's back", goes the common expression. When raindrops hit the "waterproof" feathers on a duck, they bead up and do not penetrate the feathers. How does this work?