I've notice a huge amount of pelagonis in the shores, in the island. This is all shores save for the north. I didn't venture there because I have no fur set yet. I got a raft and went all over the coast of the island, Also traveled them with an argentavis. Note aside: I could reach from the hervivore island to 40, 16 by the coast, not a straight line, non-stop, battling wings a couple of times