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Thursday, March 5, 2009

Do Birds Blink?

This week I got my first issue of Montana Outdoors. I was given the subscription by my dad for Christmas. Within minutes of opening it I learned something I had never thought about. I'm passing along this tidbit in it's entirety for your enjoyment:
Q. Do birds blink?
A. Yes, says Krisit Dubious, FWP native species coordinator in Missoula, but not quite the same way humans do. Birds have an extra eyelid, a transparent membrane that lets them blink without closing their eyes. This "nictitating" membrane helps keep a bird's eyes moist without blocking vision during flight. Birds usually close their main eyelids only when asleep.
Who knew?

1 comment:

Kim said...

What a sweet flying feature!! Who knew?!