Yes. In recent years many birds in the United States have contacted a disease called the West Nile Virus and when they get this they often die while flying. Here, in CA, we have been instructed that if we find a dead bird we have a phone number to call so they can pick it up to be tested for the West Nile.
Birds have a protective membrane called a nictitating membrane that covers their eyes while flying in rain to help keep them moist and maintain visibility. Additionally, birds have specialized oil glands near their eyes that secrete oils to help repel water and maintain clarity of vision while flying in rainy conditions.
Flying is not an instinctive behavior for birds; rather, it is a learned behavior. Birds learn to fly by practicing and developing the necessary skills as they grow and mature. While birds have evolved over time to have adaptations that make flight possible, it is not something they automatically know how to do.
A "birds eye" view is a view of something from above. The view a bird would see while flying over something.
Humming Birds
About 1 billion birds are killed in the US every year so possibly, 5 to 10 billion birds per year. As for per day, possibly 1 to 10,000 birds.
NO!! If they did, they wouldn't fly!
If your talking about crows then yes, they caw while flying.
they sit
They usually do it to call in birds to mate.
through their nose
59%
They do cast shadows.
The skylark.
if something hits them
Gravity
no more than when flying over anywhere else.
No- In Fact Canadian Geese Never Collide When Flying In Formation