A bat tree is a tree that is favorable for migrating Indiana bats to roost in. Rough or loose bark open cavities or lots of deadwood. We have to remove them before the bats migration pattern hits our area. We got till the end of March to do about 100 removals for the gas company. Most need to be just put on the ground but the 30 my crew has are complete clean-up as they are within the city. Large cottenweed, willow, shagbark hickory are a few of the types of trees. When it gets to the rural ROW's I think the people deciding which trees are bat trees just walk the lines and get high all day. They'll mark one tree and not another of the same species closer to the pipeline. Anyhow I think it's a money thing some do gooder thought up. Kinda PITA but I'm on unlimited OT till the end of March