Editing Flight (section)

==== Unpowered flight versus powered flight ====
{{Main|Unpowered flight}}
Some things that fly do not generate propulsive thrust through the air, for example, the [[flying squirrel]]. This is termed [[gliding (flight)|gliding]]. Some other things can exploit rising air to climb such as [[Bird of prey|raptors]] (when gliding) and [[glider (sailplane)|man-made sailplane gliders]]. This is termed [[Lift (soaring)|soaring]]. However most other birds and all [[powered aircraft]] need a source of [[propulsion]] to climb. This is termed powered flight.