This video from Britain says about itself:
17 December 2014
When everyone else is sleeping the bats in Britain’s countryside come to life. Researchers in Oxford University’s outdoor laboratory Wytham Woods lift the lid on the secret life of these varied and misunderstood mammals, offering a unique glimpse into a hidden twilight world.
Featuring contributions from Wytham Bat project co-ordinator Danielle Linton and researcher and presenter George McGavin.
Don’t allow undermining of protection for bats: here.
Migratory bats and wind energy: a research project in Canada: here.