Narc it up to 75% Torpor and check with the magnifying glass to be sure. Feed it a corpse(fish or dodo or smth), and as soon as it eats the corpse, narc it out! It will heal up and when its narced its food will drop 2000-4000(depends on how fast you narc it out). TADAA...instatame ;)
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.