If you are new to ark, I would recommend finding a good pterodactyl level 120 130 140 150 and so on. If you can't find one that perfect then just get the highest level you see. Then find a trench, make sure you don't have valuable loot and scope out the spot with the least wyvernns and dive in as fast as you can toward that spot. Grab the first one you see in that area fly up high an shoot down as fast as you can go and try to deagro those wyvernns to other animals.Make sure you about 15 torches around it and find a deondon to heal it until it gets fully mature.