Command to Spawn Tamed: Cheat GMSummon "DA_Argentavis_Character_BP_C" 150
Add to Spawners (Game.ini): ConfigAddNPCSpawnEntriesContainer=(NPCSpawnEntriesContainerClassString="DinoSpawnEntriesBeach_C",NPCSpawnEntries=((AnEntryName="DA_Argentavis",EntryWeight=0.1,NPCsToSpawn=("/DivingArgentavis/DA_Argentavis_Character_BP.DA_Argentavis_Character_BP_C"))),NPCSpawnLimits=((NPCClass="/DivingArgentavis/DA_Argentavis_Character_BP.DA_Argentavis_Character_BP_C",MaxPercentageOfDesiredNumToAllow=0.1)))