Did you catch the third eyelid? 👀 The nictitating membrane is a transparent third eyelid that can be drawn across the eye to protect and moisten while maintaining visibility. Fun fact, nictitating membranes are found in fish, amphibians, reptiles, birds, and mammals but typically not primates. See this for yourself at our Center! We have tickets left to both of our flight demos on Friday, November 25, the day after Thanksgiving. Bring the whole family! https://fareharbor.com/embeds/book/thecent
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Birds have two eyelids, upper and lower, but they also have a translucent nictitating membrane, sometimes called a “third eyelid”. This membrane closes across the eye from front to back, as you can see with Griffin here. It is used to moisten and clean the cornea, especially in flight. It is also drawn across the eye when there is a chance the eye might be scratched or damaged by activities like flying through brush or feeding their young. Macaws have such beautiful eyes. Like an endless tunnel.
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Did you know that chickens upper and lower eyelids aren’t really used for blinking.Instead, they have a third eyelid called the nictitating membrane. It’s stored in the corner of their eye, closest to the beak and moves side to side. This keeps their eyes clean.When they sleep, they will close their eyes, but it is the lower lid that moves up to close. #PrimalPastures #RegenerativeFarming #paleolifestyle #BeyondOrganic #PastureRaised#KnowYourFarmer #Soyfree #Cornfree #WeAreWhatOurFoodEats #farml
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