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Bat pipistrelle 2Bat (Pipistrellis pipistrellis) There are 17 different bats in the U.K. the most common being the pipistrelle. You are most likely to see them around woodland, hedgerows and grassland.


They come out of their roosts about 20 minutes after sunset and fly around between 2-10 m (6-33ft) above ground searching for insects to eat. They roost in tree holes, crevices of buildings or bat boxes.

Their bodies are medium to dark brown with black around their eyes.They are mammals, and like other mammals including ourselves, they have hair  or fur on their bodies and are warm blooded. A baby bat feeds on its mother's milk for at least a few weeks after it is born. Bats are the only mammal that can fly.

A bat's wing has very similar bones to the hand and arm of a human with skin stretched between the very long finger bones and the body to form the wing membrane.

At night they use their ears rather than their eyes to find things using a special sonar system. When they fly they make shouting sounds which most humans can't hear athough some children can. The sounds or echoes they get back from their shouts give them information about anything that is ahead of them including the size and shape of an insect and which way it is going. This special system allows them to eat about 3000 insects in one night.

In winter when there are fewer insects they go into a deep sleep called hibernation to save energy. They hang upside down so they can spread their wings and also have a good clear view for hearing and seeing  so they are ready for take off at any time.