how do dragons fly? (Spoilers all books to end DH)

['thul]

ahh... this thread was a rather interesting discussion last year...

City of Dragons Class spoiler

It would seem that the theories 'thul had back then are fairly well-proven by the events given in this latest book. Not only did Sintara learn to fly (eventually), but she did so with clear use of her muscles, not a single mention of magic, nor any such things as inflated parts of her body. Part of the problem earlier was that our dear tangle leader has failed to express quite just how vast the wings of her dragons are. It will be very interesting to see next year in Blood of Dragons to see whether Thymara actually learns to fly. Her wings have certainly grown far bigger, and with access to the stuff Elderlings and dragons need, combined with sufficient food, no doubt her wings will grow much larger. It would not be very surprising if her body also grows leaner, not from lack of nourishment, but from changes as she matures and becomes a full Elderling, with all that entails.
One of the things she has to do to learn flight at all, is to strengthen her muscles, much the way Sintara has done, and the others are doing. Not only does she need to grow large wings, but the muscles to maintain them. Early in flight, 'thul feel that she will crash a lot and need thermals to ascend. It might not hurt for her to practice over semi-shallow and slow-flowing water rather than ground, since she might have better landings into that at slow speeds.

Thoughts?

Now how many are tempted to read this that haven't read CoD yet?

*whistles harmlessly*
(truthfully, thul is actually laughing like a true evil maniac, but you're not supposed to notice that.)