No. They fly by means of forces they create by manipulating air with their wings and tails.
No.No.No.No.
The words weight, fly and sand have "fly" in common, because together they can form other words. Their direct relationship is: fly, fly weight, and sand fly.
Aircraft fly by using a propulsion system, that being a propeller, or jet engine. Birds fly by flapping their wings in order to gain forward velocity.
A list of streamlined animals-SnakesAnimals that live undergroundMost aquatic animalsTreefrogsBirds
No, Gravity actually pulls upwards but the sheer mass of things makes them heavier and stay on the ground instead of flying away. This is how Birds are able to fly, because they have a mass inconsistency they partially float and then propel themselves with their wings.
They use the Earth's magnetic field to determine direction and position.
Magnetic compasses will become unuseful when near a magnetic field.
The birds that can fly because it is easier for them to find food.
birds can fly because they have such small, light bones in their wings.
because they have wings
Birds are lightweight because they have hollow bones. This helps them fly.
no because birds fly to a warmer place
a lot because there was birds that fly into the buildings.
Because if they didn't fly they would have to walk Because its too far to walk when migrating.
Because they can't fly.
because there always going south
It is not only birds that fly. Bats fly and they are not birds.