@neauoire @cancel you’re totally allowed to put bat houses on your property in the US. There are organizations that will try to get them to you for free or cheap to help support the population.

I think attaching a bat house to a vehicle and moving them around is where it stops being considered humane or legal since you are at that point transporting wildlife. Bringing them through customs would definitely get you snarled up in bureaucratic issues with both Canada and the US.