U can instant this can save hours get into trap tranq it do its running from u or check it’s torpor with a mag glass when it’s 1 or 2 hits away from being knocked out put a body under it like a Dino body your out a bed down and kill yourself wait for it to eat the body might take a few minutes but when it does eat the body light it up with tranqs while it has the green effect if u knock it out while it had the green affect it’s food will go down by a lot and I mean a lot more then enough to instant tame
An argentavis can't fit through a ceiling with one tile missing, but a pteranadon or lymantria can. Build a trap with one corner ceiling missing, aggro the argentavis, fly in one side and out the missing ceiling tile, and land. Dismount, run around, and close the entry door. Tame safely at your leisure.