The wings of a bird help the bird float on air currents. That's why a bird doesn't have to flap the whole time. It can float or soar.
The shape of the wings.
Birds use their wing muscles to spread out their wings when they are ready to fly. Birds use thermal air currents, updrafts, and wind to soar and flap their wings when needed.
Birds fly in the air by pushing their chest muscles and moving their wings up and down.
birds,bats, insects, animals with wings
Ex:- Flying gracefully through the air, birds depend on Newton's third law of motion.As the birds push down on the air with their wings, the air pushes their wings up and gives them lift.
Because upthrust is greater than gravity, therefore, it stays in the air. Also, the power of the engines/wings hold them up.
the birds wings are shaped just right so that air gets under them creating a lower air pressure underneath when they flap. so they fly forward.
Kiwis have only tiny, rudimentary wings. They are completely ground-dwelling.
Birds with their wings streched out have more surface area so they catch the air, but birds with their wing tucked into them have no traction and no air catches them.
When in flight, birds flap their wings to push air beneath them. By pushing the air down, they are propelling themselves upwards.
A bird creates lift by flapping its wings Aircraft move by the air moving over the wings (where as birds move by moving their wings around the air)
so they can gain lift so they can fly
Two main factors help birds fly: their own strength and propulsion. Birds use propulsion by turning their wings, lifting them upward, then turning them downward. As they lift the wings, air pushes up from below and pushes the bird forward.