Bats

We have a breeding colony of Soprano Pipistrelle bats in our bedroom roof - they are extremely noisy at night (sounds like they are running around with clogs on) but it only lasts for a couple of months so we put up with it. Usually they go up into the roof under the fascia board but this morning in the garden I could hear more-than-usually-loud bat communication squeaks and realised that there was a little cluster of about 7 bats tucked up underneath the gable end. I wonder why they are there? Are they adults or juveniles? Are they juveniles that couldn't find the way back in?
That's the trouble with wildlife - every sighting just leads to more questions!