The Nictitating Membrane: The Third Eyelid ~ Kuriositas
The "Eyes" Have It (Bird Eyes)
The white eyelid of American Dipper – Sibley Guides
Birds Have Built-In Goggles | Audubon
Owls & Eyelids | Naturally Curious with Mary Holland
The Nictitating Membrane: The Third Eyelid | The Ark In Space
Do Birds Have Eyelids? (Complete Guide) | Birdfact
A Bald Eagle at the Alaska Raptor Center, showing off her “nictitating membrane”. Birds have upper and lower outer eyelids, but beneath the outer eyelids lies an extra eyelid, called the nictitating
Dove's Semi-Transparent Eyelids - YouTube
BACKYARD BIRDING IN MERIDA, YUCATAN AND BEYOND – WHAT'S THE EYE-DEAL? EYELIDS AND EYE-RINGS, PART 1 of 2 – The Yucatan Times
Bempton birds – eyelids – David at the HALL of EINAR
AvianRecon — Did you know that birds have a third eyelid? It's...
A Closer Look at the Fascinating World of Bird Eyelids
The eyelids of birds | Winks and Blinks
Owls & Humans Share Trait | Naturally Curious with Mary Holland
Photo by riddhishchakraborty | Mammals, Owl, Photographer
Nictitating membrane - Wikipedia
Do Birds Have Eyelashes? | All About Birds All About Birds
Nictitating eyelids « lirralirra
The eyelids of birds | Winks and Blinks
The eyelids of birds | Winks and Blinks
Do Birds Blink? | Bird Spot
