The Argentavis is an extremly useful mount, and now it's even better thanks to its TLC, the argentavis has reduced metal weight but make sure to put the metal in it's inventory when riding it because if u the player is holding it while riding the argentavis it's wait will not be reduced, the argentavis also now is able to get a heal buff when it harvests a corpse, the argentavis saddle now works as a potable smithy. The argentavis is also a great dino for taming because it can pick up small to medium sized dinos, good argentavis is also strong enough to take down the likes of rex and spinos but yutis roar does effect the argentavis so watch out for that, all of the argentavis stats are amazing and I would highly taming up a few good argentavis, if you are looking to tame an argentavis look up on YouTube argentavis traps which will hel you alot, the argentavis is one of my personal favourite dinos. Like this so it can help some new players or players wich want to know more, Good luck.
Getting a massive TLC update in March 2018. The saddle will act as a mobile smithy, Argentavis will be able to carry with Talons as well as with its beak, reduced carry weight on obsidian and a few other unannounced resources (similar to the mammoth and wood), and will also gain a Rapid HP Regen upon eating (likely from devouring corpses and not specifically food from inventory). Like so people can see!