This video is called hy Do Bats Need Cowpats? – The Animal’s Guide To Britain, Episode 2 – BBC Two.
From the RSPB in Britain:
Build a home for bats
Bats are finding it hard to find food to eat, plus many of their natural sleeping places are being damaged and destroyed.
Simply putting up a bat box will help these night-time creatures have somewhere safe to raise a family and sleep during the day.
You’ll want to keep an eye out for common pipistrelles – they are our smallest bats, weighing the same as 10 paperclips and are small enough to fit in a matchbox!
RSPB bat boxes: see here.
Helping bats in the Netherlands: here.