Originally posted by Emopanther:

This is pretty far from any other biomes, and they are everywhere. End to end of the meadows and found skeletons killing everything. :/

They don't spawn in the meadows so there must be a sliver of BF somewhere. A dungeon or tower is where they usually spawn but they can spawn in the open. I built a base on a new island in the meadows. Came back on a boat at a different angle to find a troll on the shore. Around a 20m wide area was BF.