Crested serpent eagle with natural cleaning film over eyes

[Shyamala Kumar]

I was pleasantly surprised to see that I had captured the bird while this natural process was taking place.D3200 55-300MM 300MM F/9 1/125S ISO 400

[Saktipada Panigrahi]

NICE documentation of Nictitating Membrane in the eyes of CSE. It protects the eye as third eyelid normally activated just before action. Thanks for sharing.SaktiWild

[Sabyasachi Patra]

Nature has an amazing way of bestowing tools as per necessity and takes away the ones that are not used. As Dada has rightly mentioned, when two of them are fighting, the nictitating membrane covers the eye.

[Shyamala Kumar]

This was filmed at Kabini on 21st May 4.20pm during an evening safari