I go to center caves, 2 in redwoods and floating island are best. Full ghillie, bug repellant, sacrificial sheep, chainsaw, sleeping bags, preserving salt. Use wyvern wing flap your target to safe area make sure bat is just above character level. Kill that ovis with chainsaw! Place sleeping bag just in case.. Put taming mutton in inventory with half stack of salt. Rest of salt and mutton into wyvern. Ghillie up! Bug spray! Walk slow! Stand under feed, do not move. Stand there for 5 mins(might be shorter but dang its long) it goes faster after that first bite. Keep track of repellent back away slow and reapply if needed! Perfect tame every time!
If you're planning on taming these guys BE PREPARED AND IF YOU'RE PLAYING ONLINE GO WITH ATLEAST 4 PEOPLE IF YOU WANNA TAME THIS!!! It gives mega rabies and will kill you! Also if somebody gets the mega rabies STAY AWAY FROM THEM. ITS CONTAGIOUS.