Patagium
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The patagium is a membranous body part that assists an animal in obtaining lift when gliding or flying. The structure is found in extant and extinct groups of flying and gliding animals including bats
Wing of a desert red bat (Lasiurus frantzii)
A flying dragon, Draco spilonotus, extending the gular flag (throat flap) and patagia
Flight
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Flight or flying is the motion of an object through an atmosphere or through the vacuum of space, in this case also called spaceflight, without contacting any planetary surface. This can be achieved b
Bird flight by a brown pelican.
Human-engineered flight: a United Airlines Boeing 787 taking off from Heathrow Airport in December 2013.
An airship flies because the upward force, from air displacement, is equal to or greater than the force of gravity
Female mallard duck