Quetzalcoatlus and Other Giant Pterosaurs were Short-Range Flyers
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Scientists have used aerodynamic models to comprehensively quantify soaring performances and wind requirements of these extinct pterosaurs and volant birds and compared them with extant soaring birds.
Could the Quetzalcoatlus and other large Azhdarchid pterosaurs run after prey on land? - Quora

What was it that made Quetzalcoatlus so huge & still able to fly? - Quora

Pterosaurs Are Changing What We Know About Flight

Fossils ID'd As New Species Of Giant Flying Reptile That Once Flew Above North America - Reptiles Magazine

Quetzalcoatlus, Dinopedia

How Big Was Quetzalcoatlus and Other Giant Pterosaurs?

azhdarchid, The Pterosaur Heresies

Giant Pterosaurs Could Fly 10,000 Miles Nonstop

Mark P. Witton's Blog: Why we think giant pterosaurs could fly
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