Lots of bats here but I live on water and there is an old pill box across from me were they roost, think the weather has a big bearing on things to much rain means insects not out so bats not out, also been a bad year for owls due to the non stop rain through spring affecting there hunting which knocks on to breeding, I,ve noticed more of these little things since living on the boat than I ever did in a house even though I was out as much as possible