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Blinking Hawk

This is a "nictitating membrane", a second transparent eyelid that some birds use to blink. It moves side to side instead of top to bottom.

2,209 views
3 faves
2 comments
Uploaded on March 17, 2013
Taken on February 3, 2013

Blinking Hawk

This is a "nictitating membrane", a second transparent eyelid that some birds use to blink. It moves side to side instead of top to bottom.

2,209 views
3 faves
2 comments
Uploaded on March 17, 2013
Taken on February 3, 2013
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