Wild Wednesday – The Hornet
Hornets are among the most striking insects found in the UK, and while their size and loud buzz can be intimidating, they play a key role in our local ecosystems.
The European hornet, scientific name, Vespa crabro, is the UK's largest social wasp, growing up to 35 millimetres long. With its chestnut‑brown body, yellow markings and powerful flight, it's a species that tends to command attention wherever it goes.
Are hornets dangerous?
Despite their fearsome reputation, hornets are generally less aggressive than common wasps. They will only sting if threatened or if their nest is disturbed. In fact, hornets are more likely to avoid confrontation and are often active during the evening or at night, unlike many wasps.
Their sting can be painful, but it is no more dangerous than a wasp sting for most people. As with all stinging insects, caution and calm behaviour are the best approach.
Why hornets matter
Hornets are valuable predators, helping to keep populations of other insects in check. They feed on flies, moths, caterpillars and even other wasps, making them a natural form of pest control. Adult hornets also visit flowers, contributing to pollination as they forage for nectar.
Although they are sometimes blamed for attacking bees, this behaviour is occasional rather than typical, and hornets form a balanced part of the wider ecosystem.
Where do hornets live?
Hornets usually nest in tree hollows, old sheds, loft spaces, or barns. Their nests are made from chewed wood fibres, giving them a papery appearance. Colonies are seasonal, with nests dying out naturally by autumn as the new queens leave to hibernate.
Because of this, nests that are not causing a safety issue are often best left undisturbed until the end of the season.
Hornets and people
Hornets are protected under UK wildlife legislation, meaning nests should not be destroyed without good reason. If a nest is causing concern, professional advice should always be sought.
Simple steps can reduce unwanted encounters:
- keep food and sugary drinks covered outdoors
- avoid sudden movements when hornets are nearbyleave fallen fruit under trees, which can attract hornets away from outdoor seating areas
A species worth understanding
Hornets may look alarming, but they are a fascinating and beneficial part of our natural world. By learning more about them and allowing space for wildlife to thrive, we can better appreciate the role even the most misunderstood species play in keeping ecosystems healthy.
Take a moment to observe from a distance - the hornet is not a villain, but an important and impressive neighbour.
On the other hand - the Asian hornet, also known as the yellow‑legged hornet, is an invasive species of serious concern in the UK due to the threat it poses to bees and other pollinators.
Read more here: Hornet | The Wildlife Trusts