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Sun Feb 28, 2021, 10:44 AM

Have you ever seen an eagle blink?



12 replies, 2811 views

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Arrow 12 replies Author Time Post
Reply Have you ever seen an eagle blink? (Original post)
MLAA Feb 2021 OP
Demovictory9 Feb 2021 #1
secondwind Feb 2021 #2
Myrddin Feb 2021 #3
Skittles Feb 2021 #4
Fla Dem Feb 2021 #5
BobTheSubgenius Feb 2021 #6
MLAA Feb 2021 #11
Politicub Feb 2021 #7
MLAA Feb 2021 #9
Bayard Feb 2021 #8
MLAA Feb 2021 #10
Xipe Totec Feb 2021 #12

Response to MLAA (Original post)

Sun Feb 28, 2021, 10:45 AM

1. Cool

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Response to MLAA (Original post)

Sun Feb 28, 2021, 10:48 AM

2. Love DU! Always learn something when I visit the page.

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Response to MLAA (Original post)

Sun Feb 28, 2021, 11:12 AM

3. Nice one

Education never stops

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Response to MLAA (Original post)

Sun Feb 28, 2021, 11:32 AM

4. Wow

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Response to MLAA (Original post)

Sun Feb 28, 2021, 11:44 AM

5. Wonderful video, but Eagles are not unique in this eye movement.

Birds rarely blink (with the exception of owls, parrots, ostriches, and a few others) and close their eyes for sleeping by raising the lower lids. Usually unseen, however, is the third eyelid (nictitating membrane), located beneath the upper and lower lids, which moves horizontally across the eyeball. The movement of this eyelid across the eye functions like our blinking and serves to keep the eye moist. In some diving birds, the nictitating membrane has a transparent window that permits vision underwater while the membrane is closed.

https://www.birdwatchingdaily.com/news/science/why-birds-eyes-are-so-large-and-how-they-function/#:~:text=Do%20birds%20blink%3F,moves%20horizontally%20across%20the%20eyeball.

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Response to MLAA (Original post)

Sun Feb 28, 2021, 01:15 PM

6. That reminded me of an alligator's blink.

The membrane did, anyway. Thank you, MLAA! That was unexpected and cool!

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Response to MLAA (Original post)

Sun Feb 28, 2021, 01:15 PM

7. Will keep this on file for the next time an eagle challenges me to

a staring contest.

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Response to Politicub (Reply #7)

Sun Feb 28, 2021, 09:24 PM

9. I'll put my money on you politicub 😬

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Response to MLAA (Original post)

Sun Feb 28, 2021, 01:43 PM

8. The third eyelid



All kind of animals have them. Humans are the weird ones without.

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Response to Bayard (Reply #8)

Sun Feb 28, 2021, 09:24 PM

10. Cool!

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Response to MLAA (Original post)

Sun Feb 28, 2021, 09:38 PM

12. They nictitate nt

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