I've never had Shamans or Berserkers spawn as a 'night' encounter...at most, 5 Furlings, perhaps 1 'starred' version...it's a short spawn list: Squitos, Furlings, Birds, Lox...rinse/start list over again...at my Plains farm...staying up all night, you see the list play out over and over...not had any of the 'new raids' yet?