Hays Eaglet H13 A Nictitating membrane study 2021 04 16 15:10

The nictitating membrane is a transparent or translucent third eyelid present in some animals that can be drawn across the eye for protection and to moisten it while maintaining vision. The term comes from the Latin word nictare, meaning "to blink".
Note: they work independently in each eye and extend from the inner corner of the eye to the outer corner and are translucent.
#hays#eagles,#nictitatingmembrane,