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Pipistrelle bats are the small, fast-moving bats many people notice at dusk. They often roost in quiet gaps around homes and nearby trees, which is why you may see them flitting overhead in the evening.

What are pipistrelle bats?

Pipistrelle bats are small, nocturnal mammals that live in groups and spend much of their time roosting in sheltered spots. They use echolocation to find insects in the dark and often live close to people without being noticed. As natural insect hunters, they help reduce flying pests in many environments.

If you think bats may be roosting on your property, you’ll need pest management for homeowners. We inspect your property, identify signs of wildlife, and recommend exclusion strategies to help prevent future activity

Pipistrelle bat characteristics and appearance

Pipistrelle bats are small and agile, and their size contributes to their quick, fluttering flight. They have compact bodies, short legs, and wide ears that help them hunt at night.

  • 35 to 45 mm in length. 
  • Three to nine grams in weight.
  • Forearm length between 30 and 35mm with a wingspan from 200 to 250mm.
  • Mid to dark brown fur.
  • Pipistrelle bats have tiny bodies with short hind legs and short, wide ears.
  • They are known for their fast, fluttery flight and ability to hunt in cluttered spaces
  • Active at dusk and throughout the night, feeding on flying insects.

Habitat, diet, life cycle, and behaviors

Pipistrelle bats live in many places where food and shelter are nearby. Their habits change with the seasons, and understanding these patterns helps you know when you may see them around your home.

Bats are the only mammals that can fly, which lets them roost in places high off the ground. You may find these bats in sheltered areas such as trees, roof eaves, small wall gaps, and rock crevices. They can squeeze through spaces as small as thirteen millimeters.

In the summer, they gather in colonies where females raise their young. In winter, they hibernate in cool, sheltered spots such as tree hollows or building crevices. After sunset, they leave the roost and forage for insects through the night.

Pipistrelles don’t damage buildings, though their droppings can create some mess. They aren’t aggressive, but like any wild animal, they may bite if they are handled roughly. In many countries, bats and their roosts are protected by law, so it’s an offense to block or disturb them.

Pipistrelle bats feed mainly on small flying insects such as lacewings, moths, mosquitoes, and midges. They hunt over water, woodland edges, marshes, and even well-lit urban areas where insects gather. Their fast, agile flight helps them catch prey in midair.

Pipistrelle bats have a unique reproductive cycle and a surprisingly long lifespan for such small mammals. Here’s an overview of their life cycle:

  • Pipistrelles  mate in autumn, just before hibernation, but the female's egg cells are not fertilised until the spring. (Known as delayed implantation).
  • Once the embryo starts to grow, gestation is between six and seven weeks, with usually just one baby being born in the summer.
  • Baby bats are tiny, blind for about a week, and hairless. They rely on warmth for growth and development.
  • The young bat lives on its mother’s back – and is fed solely on her milk – until it can fly and hunt for itself; usually between three and six weeks.
  • Pipistrelle bats can live for up to 16 years.

Pipistrelle bats are social, spending much of their lives roosting with other bats. They communicate through calls too high for humans to hear. Most activity begins shortly after sunset, when they leave the roost and search for food. Their flight paths often follow hedgerows, tree lines, or water edges.

Pipistrelle bat flying in the attic

Signs of pipistrelle bat activity

Bats can be hard to spot, but you may notice signs of activity around your home. Common clues include small dry droppings beneath entry points, squeaking sounds at dusk, or seeing bats emerge from the roofline as the sun sets. 
If you’re unsure whether the signs point to bats, a professional inspection can help. Our wildlife protection and relocation services help manage bat activity responsibly.

Pest control for your business

Bats can sometimes roost in commercial buildings, which may raise concerns about droppings or employee safety. We work with businesses to assess their activities and recommend appropriate steps, all while adhering to all relevant legal protections for wildlife. Discover more about our commercial pest solutions for workplaces.

Professional pipistrelle bat control services

Bats and their roosts are protected by law, managing them takes care and the right approach. At Presto-X, we can help you learn about what’s around your property and what steps you can take to keep your home protected.

Frequently asked questions

Bats are not aggressive, but they may bite if handled or threatened. Avoid touching any bat you find. If someone is bitten, they should seek medical attention immediately.

Yes, many bats return to familiar summer and winter roosts. If a roost is suitable and undisturbed, they may use it year after year.

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