Originally posted by gsw mer:

literally atleast 12 hrs of real ingame time later the yaks respawned. Are you sure the game is not broken and you intended for them to simply NEVER respawn?

I've killed 6 (2 sets of 3) within I'd say 300 yards of one another. After the second set, I turned around to head back to base in the BF and 3 more had spawned where the original 3 had been.

I've had days go by without seeing some too. It's really just luck of the draw I wanna say. Like getting a decent seed with plentiful crypts.