Birds in flight

My friend showed me this amazing video of an owl in flight.  I became mindful of bird's characteristics that enables them to fly.  Their wings are the biggest reason.  The shape of a bird's wings is called an airfoil.  Wind will flow over the wing and under the wing.  The phenomenon that will enable the bird to lift is that the pressure of the air moving over the wing is less than the pressure of the air moving under the wing.  Thrust is also present in bird flight; it is created when the bird flaps its wings to crete speed.