News About The Raptor Center, College of Veterinary Medicine at the University of Minnesota
Tuesday, September 23, 2014
What do Raptors Use for "Goggles"?
What a wonderful sight to see a bald eagle soaring! In the first photo of our post today, though, do you notice anything different?
In this close-up you can see that there is something covering the eyes! It is called a nictitating membrane.
A nictitating membrane acts much like a pair of “goggles” for
raptors.In flight, raptors can see
through this third eyelid, and it will keep the eye safe from dust and other
objects in the air.It also keeps the
This is the same bird, in a subsequent frame.
You can see that the eye is uncovered for a moment in the bird's flight, and that there is nothing wrong with the eyes.