Catch them in an argentavis trap. Get a magnifying glass. Shoot them with narc arrows until it is just about to go unconscious (Use the magnifying glass to inspect the torpor) feed the argentavis a body. Imediately after it consumes the body shoot it with narc arrows to finish knocking it out (*if it does not have the green effect around it's head do not knock it out! If the effect is gone feed it another body) Purpose when the argentavis gets knocked out with the effect his hunger will already by very low. Super fast taming!
You can insta tame it by making it attack you and it will harvest a body then knock it out when it has the health increase stat (green thing around its head)then once it is knocked out I will tame automatically, HELP THE BOBS
For ark mobile: traps are not required for low levelled argies, just keep a friend or two with you and tranq it when it's attacking you, using toxicant arrows is better, it will go down in just 4-5 toxicant arrows.
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.
If an Argy you’re trying to tame is spawned in a dangerous spot (A place where lots of predators also spawn and could possibly kill the creature you’re trying to taming) Set up spiked walk around the area, so predators get killed or hurt when they walk too close to the spiked walk) This usually works for most predators.