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Gary Fairhead | all galleries >> Galleries >> Great Grey Owls > Nictitating Membrane
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Nictitating Membrane

This membrane is a third eyelid...transparent...like built in safety glasses that also moisturizes the eyes...as demonstrated here by the GGO


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pkocinski29-Jan-2013 12:27
Great catch on the membrane!
Alex Antal29-Jan-2013 12:14
great shot!
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