Posted: 13/06/2016 at 12:08
large maternal roost equals lots of droppings.
I have doubts about south facing. Our breeding roost pips usually enter the roof and set up east or west facing. Occasionally they set up over a south facing dormer and it's disastrous. First hot day and the adults are hanging outside trying to cool off. The babies fry. 5 dead babies in the gutter below last year.