How Do Birds Protect Their Eyes When They Fly In the Rain and What Is a Nictitating Membrane?

Birds have a sort of thin extra eyelid called a nictitating membrane that protects their eyes and may do so in the rain.

The membrane is not entirely transparent, so the birds may not see clearly, but they can probably see light and dark.

As in cats, dogs and other animals, this membrane can flick over the eye very quickly to protect it.

how do birds protect their eyes when they fly in the rain and what is a nictitating membrane

It guards against collisions when birds are crashing through brush, and in birds of prey like the peregrine falcon, it closes immediately before impact with victims, covering the eyes as the bird grabs its prey.

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Karen Hill is a freelance writer, editor, and columnist for Born in New York, she loves interesting random facts from all over the world.