-The upper eyelid rarely moves. Instead, when a chicken falls asleep or simply wants to rest its eyes, it is the lower eyelid that elegantly slides upward to close the eye completely.
-The third eyelid, located right at the inner corner of the eye. Known as the nictitating membrane, it sweeps horizontally across the eye like a rapid windshield wiper. Because this membrane is translucent, chickens can actually see through it even when it is drawn closed.
This third eyelid plays an absolutely crucial role in their daily lives. Our birds spend their days joyfully scratching through the dirt, foraging for seeds, and indulging in glorious dust baths. During all these activities, the nictitating membrane acts as a protective shield. It swiftly clears away dust, dirt, and debris while continuously distributing moisture to keep the eye perfectly lubricated. It is nature’s own safety goggles, allowing them to navigate their environment safely and comfortably.
So next time when you great your chooks, see if you can spot their third eyelid!
