How To Catch Argentavis Ark, To summon the Beta and Alpha versions of the Broodmother, you'll need to present 5 and 10 Argentavis Talons, respectively, along with a few other Artifacts.
Is it even possible to craft this saddle in a Smithy or Argentavis saddle? : r/ARK
Ark | How to spawn Argentavis Saddle w/ GFI commands - YouTube
Saddles - ARK: Survival Evolved Guide - IGN
Ark Survival Evolved PC - PVE NEW - Argentavis Blueprint Ascendant Saddle BP 124 | eBay