Found mine (level 45) at lat 42.7 long 65.8

Spent two (irl) days looking for one on my Singleplayer Island game, was about to throw in the towel and spawn in a wild one to tame then BAM, I got the dopamine hit I was waiting for when I saw that big mother flapping about. Landed my tapejara, loaded up the longneck with darts and set my Tappy to follow and attack, after a length chase shooting darts from the passenger seat brought him down near the swamps, west coast. Solo tame. Finally!!!!!