Birds eyes

[tubeway]

Do birds eyes water when they fly fast?

[andy-hughes]

I am sure that birds don;t have tear ducts like human eyes.

They do have a semi-transparent membrane which crosses the eyes much in the same way that we blink, and this no doubt protects the eyes of a flying bird.

[brachiopod]

The female, (hen), bird's eyes do water, however, during the ovulation (egg laying) process*

* - according to the 'Brachiopod's Own' Big Book of Facts

[heathfield]

If ever you have the opportunity to look at a swift close up, you'll see that they actually have eyelashes in front of their eyes. Maybe they are there to help stop eye-watering in these fast flyers.

[stevie21]

They wear goggles!

[3shortplanks]

No! Only if they land awkwardly.