With the new flyer nerf on Ragnarok get a griffin since they have decent health and are the fastest flyer in the game. To tame one use a smallish cage to trap the griffin and then knock it out and tame. Then use it to steal the Wyvern egg(s) and then raise the baby(s). P.S you should be able to transfer a griffin to scorched earth.

More Wyvern Taming & KO Tips