I was hunting out East of Daoaba Guerfel and couldn't find any of these. Went over North of Tyrena to the waypoint listed above but no joy. Kept driving around and came across a nest. The first baby I tried to tame aggroed the entire nest and as I ran away i somehow hit the baby despite my best efforts. Lair would not spawn another one. Drove around a bit to try and get that lair to respawn its critters. Came across another lair, killed the guardians and then the spawns as they came out, last one to spawn was a baby. Tamed it first time.