Those can be nasty, since you were out in the desert, a Black Raptor in hell has 770-2437 HP w/out minion status or any other players in the game and the crow nest of its type has 17370-23959 HP without minion status or any other players in the game (x4.25 unique and x2 minion.), they can drown you in difficult toll crows and nests and can kill you. Since they are clusted together any skill like Blizzard or Whirlwind and cut through them and damage the birds and nests on the way. I do not get though how a Crow Nest can curse you Kamikaze :yum