Nature Photographers Network
This is the preserved archive of the original Nature Photographers Network. The community continues at naturephotographers.network.
Forums · Bird Photography

Nictitating Membrane

Discussion

5 replies
Posted by David Sparks on June 11, 2009 at 11:59 AM
Nictitating Membrane
The 3 photos show the nictitating membrane of a Black-crowned Night Heron covering about one-half (this photo), almost all, and all of the eye.
More information about the membrane and it's function can be found here
http://en.wikipedia.org/wiki/Nictitating_membrane
Posted by David Sparks on June 11, 2009 at 12:00 PM
nictitating membrane covering almost all of the eye
Posted by David Sparks on June 11, 2009 at 12:01 PM
nictitating membrane covering all of the eye
Posted by Ron Bielefeld on June 11, 2009 at 12:39 PM
Cool. Don't you wish we had build in saftey and swimming goggles. Ron
Posted by Ron Dudley on June 11, 2009 at 1:23 PM
Pretty neat Dave. My other hobby is carpentry (furniture building) and a fully functional nictitating membrane would have saved me much discomfort from sawdust in my eyes when I've foolishly neglected to use safety glasses.
Posted by Richard Ditch on June 13, 2009 at 6:52 PM
I've always wondered what to do with all the shots "spoiled" by a nictitating membrane - this is an excellent way to use them.