I've seen this van parked around the neighbourhood a few times lately and I'm not sure if he lives nearby or whether he is installing bat houses somewhere. He could be doing a removal - bats are protected here and it is illegal to harm them so if they get into your place you have to gently send them on their way. In recent years the poor little guys have been having problems with a white-nose fungus that has killed many of them causing great concern since bats do such a good job of controlling insect populations. That has resulted in a lot of people putting in bat houses to help them survive and flourish.
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