Pterosaur take-off analog
In this video of a glider with legs you can see it just takes a long set of wings and a stiff breeze to become airborne – not an elaborate acrobatic forelimb leap sequence. This is a good model, a good niche and a good location, for ornithocheirid and pteranodontid pterosaurs to rest, nest and take off. The invisible, but very present breeze is key to this aerie. It provides the lift. Gravity, when the nose of the aircraft is pointed down, provides the thrust.
But wait! There’s more!
Pterosaurs, of course, provided their own thrust when they flapped. So, really, why go through goofy acrobatics when all you have to do is stretch out and flap those big wings!
I mean, really!!
It’s this simple and much less risky than the alternative.