Kelvin Shadewing's Pixels

[Silversea]

For a dragon to fly properly with membrane wings (in contrast to feathered wings like a bird), it needs a propatagium. This is an area on the anterior side of the elbow that is significant in flight speed, turning and landing, similar in purpose to but separate from the alula on an avian wing.


It is the red area highlighted below. Excuse the crappy 21 second MS paint drawing without limbs and proper anatomy.