When (today) three of these guys decided to roost in my garden (they are nocturnal, so roost during the day), it was a dilemma; if I went outside I would disturb them and they would fly away.
I decided to stay indoors for the day, and hope they don't interpret that as such a good place to roost that they come back tomorrow. Sooner or later ...
I took this photograph through my living room window.