One way is build a trap near argies and use yourself as bait. Stand near trap entrance. Shoot one with tranq dart. It will aggro on you. Lead it into trap as you run out the other side. Walk around to shut door. Done. Make a saddle before you leave home so you can fly back. ...
and lure your Argentavis into the trap, running out from the gaps left between the gateways. Quickly close off the other side of the trap with your second dino gate. Now that you have trapped the Argentavis, shoot it down and feed it Raw Meat or Prime Meat (Just l...