The birds that can fly because it is easier for them to find food.
Birds cannot fly at all without their feathers.
It helps their aerodynamics, making it easier to fly.
it doesn't the lighter their wings are the easier they can fly
To lower their body density, making it easier to fly.
It is not only birds that fly. Bats fly and they are not birds.
reproduce
Yes, it makes them lighter so they are able to fly easier.
It makes them lighter and so it is easier to fly.
A bird is not limited to fly the opposite of the ocean flow. Birds can fly in every direction but it may be easier to fly certain ways at certain times.
it helps them fly because their bones are lighter and its easier to fly with light bones. But birds with dense bones, such as penguins makes it impossible for them to fly
"If birds fly lowExpect rain and a blow."When the air pressure is high, it is easier for birds to fly at a higher altitude. If the air pressure is low, indicating bad weather, birds can't fly as high because the air is less dense. The barometer measures air pressure.
Since most wild birds can fly, it would be easiest to answer how many wild birds don't fly.Ostrich, Emu, Cassowary, Rhea, Kiwi, Penguins and the Inaccessible Island Rail. Approximately 40 species. There are approximately 10,000 species of birds...so minus 40 species of flightless birds leaves 9,960 species that fly (or, if flightless due to domestication, have living wild ancestors that can still fly).