Do birds eyes water

[tubeway]

I asked this in science too:

When a bird flies fast - what stops its eyes watering

[wildwood]

Birds have a nictating membrane which are opaque to transparant and can be pulled across the eyes from back to the front. These act like windscreen-wipers and clean the eyes from dust and other annoying matter, in flight. This membrane also protects the eyes in situations where the eyes may make contact with anything such as when preening or dust-bathing.

Unlike humans, birds are generally perfectly designed for rapid propulsion through the air and the beak breaks the air like the nose of a jet-fighter. The whole head and chest is an aerodynamic designer's dream, offering minimum resistance to the air.

The moisture settling in one's eyes on a misty morning while riding the cycle just doesn't occur in birds.

[markja]

i've watched 'catch that pidgeon' (wacky races) and it is clear that they have little goggles!!!