I was up near north zone when I spotted the level 20 Argy I named target. Super easy knockout method: I used 5 tranq darts for mine, but 14 tranq arrows work just fine if you don’t miss. I would hit it, hop on my dino, run away and get off and shoot it again and repeat until unconscious. You could outrun it, but I recommend a quite swift dino to use. Not the most op in the wild, but definitely one of my more useful creatures.
To tame one easy all you have to do is kill something so the argent Avis can eat, and while it’s healing you must knock it out with tranq arrows or darts. If it is knocked out while healing it’ll starve immediately and it’ll tame in seconds no matter what level!
If you lose your argys go to the place that shows your character press the tames button which says how much animals you have, Look for your argys name press request, then wait. It will tp to you, if it’s alive.