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March 2020

Nature's Goggles - Nictitating Membranes

They're there and then they're gone — literally in the blink of an eye!The nictitating membrane is a “third eyelid” that extends from the inner corner of the eye to the outer corner. You may see it when a bird (like this Black Vulture) – or certain other creature – blinks. Thinner and more... read more »

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Topics & Themes:  photography, science
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