The largest recorded roost in England was in the attic of a small Norfolk cottage, and was home to some 3,000 soprano pipistrelles.
Around one in four British mammals are bats and they have been protected by law since 1981.
Although most bats will feed over water, the Daubenton’s is the aquatic star. Dubbed the water bat, it skims across reservoirs and lakes, plucking insects from the surface with its hairy feet.
The noctule is our largest bat, weighing in at 40g – nearly 10 times as much as the common pipistrelle.
A pipistrelle can eat 3,000 flies a night
During hibernation, a bat can lower its heart beat to just 10 beats a minute, but in flight it can race up to 1,000 bpm.
A Brandt’s bat has been recorded at 41 years old, remarkable when it only weighs around 7g.
Bats hang upside down as it makes it easier for them to open their wings before take-off. If they were to hang on by the thumbs at the tips of their wings, they’d go into free-fall first. A special locking mechanism in their feet, activated by the bat’s weight, causes their claws to grip tighter.