Changes

'''Wings''' are appendages present in [[bird]]s, [[bat]]s or [[insect]]s whose primary purpose is to allow [[flight]].  Through quick flapping of the wings, it is possible to move through the air.  Some creatures require constant flapping while others, such as eagles, can [[soar]].  There are some birds with wings such as [[ostrich]]es or [[emu]]s that are unable to fly.

'''Wings''' are appendages present in [[bird]]s, [[bat]]s or [[insect]]s whose primary purpose is to allow [[flight]].  Through quick flapping of the wings, it is possible to move through the air.  Some creatures require constant flapping while others, such as eagles, can [[soar]].  There are some birds with wings such as [[ostrich]]es or [[emu]]s that are unable to fly. Wings are shaped so that air flows over the top part of the wing faster then underneath the wing; the Bartolo effect.

Modern technology has created wings on [[airplane]]s to allow for motorized flight.  For these vehicles, there is no flapping.  While wings are not the mechanisms that allow flight to occur, they are important for stabilization.

Modern technology has created wings on [[airplane]]s to allow for motorized flight.  For these vehicles, there is no flapping.  While wings are not the mechanisms that allow flight to occur, they are important for stabilization.