Why Bats Need a Helping Hand

The UK is home to 18 resident bat species, from the tiny common pipistrelle to the impressive noctule. All of them are protected by law, and many are struggling. Loss of roosts, shrinking hedgerows, fewer insects and ever-brighter nights have all taken a toll. Yet bats are remarkably adaptable, and the places we live — gardens, allotments, village edges and urban parks — can become vital lifelines. A single pipistrelle can eat thousands of midges, moths and beetles in a night. By making a few thoughtful changes, you can help these protected mammals thrive without disturbing them.

Putting Up Bat Boxes That Actually Work

A well-placed bat box offers a safe daytime roost and a nursery site. Choose untreated rough-sawn timber at least 15–20mm thick, or a durable woodcrete design. Avoid treated wood, which can be toxic, and boxes with draughts or shiny surfaces. Crevice boxes suit pipistrelles; larger cavity boxes appeal to brown long-eared bats.

• Mount boxes 3–5 metres high, with a clear flight path. Avoid placing them where branches or foliage block the entrance.
• Use two or three boxes on different aspects. A south-east or south-west facing box warms gently, while a north-facing one offers a cooler retreat during heatwaves.
• Fix to buildings, mature trees or poles. Use brackets or tree-friendly straps rather than nails driven into living wood.
• Position near hedgerows, tree lines or water, but keep the box out of direct streetlight.
• Be patient. Bats may take a year or more to find a new box, and they often move between several roosts.

Never open a box to check inside. If you suspect bats are using it, watch from a distance at dusk and record what you see.

Turning Down the Lights

Light pollution is one of the biggest modern threats to bats. Many species avoid illuminated areas, delaying their emergence and losing valuable feeding time. Others become vulnerable to predators. You can reduce your own impact without compromising safety.

• Choose warm white LEDs with a low lumen output, and fit shields or hoods that direct light downwards.
• Use timers and motion sensors so lights are on only when needed — never leave them on from dusk until dawn.
• Keep boundaries, hedgerows, ponds and tree canopies dark. These are bat flight lines and feeding grounds.
• Close curtains and blinds at night, and angle security lights away from wildlife corridors.
• If a light is essential, consider a red or amber filter, which disturbs bats less than bright white.

Planting for Bats After Dark

Bats need insects, and night-scented native flowers are magnets for moths and other nocturnal prey. Plant in generous clumps so scent carries on still evenings.

• Honeysuckle, white campion, bladder campion, night-scented catchfly and Nottingham catchfly all release fragrance after dusk.
• Native trees such as oak, willow, birch, hawthorn, blackthorn and field maple support hundreds of insect species.
• Let part of your lawn grow long, and leave leaf litter, log piles and compost heaps undisturbed. These are insect nurseries.
• Avoid pesticides, especially insecticides and slug pellets. A healthy garden is a bat-friendly garden.

Water, Hedges and Flight Lines

Bats drink on the wing, skimming the surface of ponds and streams. Even a small wildlife pond with shallow, unfenced edges makes a difference. Avoid stocking it with fish, which eat tadpoles and insects.

Hedgerows are the motorways of the bat world. A thick, native hedge — at least two or three metres tall — connects roosts to feeding areas and shelters insects. Trim it in late winter, outside the nesting season, and let ivy grow where it is safe. Ivy offers late nectar, dense cover and roosting spots. Mature trees, standing deadwood and cracked bark are also valuable. If a tree is unsafe, keep the stump or a section of trunk as a wildlife feature.

Being a Good Bat Neighbour

You do not need a licence to enjoy bats, but you must not disturb them or their roosts. That means no handling, no blocking entrances and no cutting back vegetation around a known roost without expert advice.

• Watch at dusk from a respectful distance. A bat detector can help you identify species by their echolocation calls.
• Keep cats indoors from dusk, especially in summer. Cats are skilled bat predators.
• If you find a grounded or injured bat, do not touch it. Contact your local bat group, wildlife trust or a trained bat carer for advice.
• Record your sightings and share them with local conservation groups. Good data helps protect roosts and flight lines.
• Encourage neighbours to join in. A cluster of bat boxes, dark gardens and night-scented planting across several properties is far more effective than a single effort.

With a little patience, your neighbourhood can become a quiet refuge for these remarkable mammals — and you will be rewarded with glimpses of them against the fading sky.