These guys are my favorite. They are quick and get over terrain. They are a solid mount. They are strong and fast. You can tame them by just getting some large bear traps. They can pounce on you and be careful flying in the redwoods. They will be in the trees and take you off your mount and kill you.
The redwoods are now basically a no fly zone, I lost a quetz, and a pter to these bastards. They jump out of the tree, rip you off your mount, and then pin you and your mastercraft armor to the ground and murder you.