This article will provide you with lots of fascinating hedgehog facts; learn about their natural history and behaviour and find out how the hedgehog is faring in Britain. Discover ways to make your garden attractive to these spiny creatures and other ways to get involved with hedgehog conservation and monitoring. Plus, get tips on some further reading and view a great range of hedgehog houses and other gifts.
Hedgehog natural history and biology
The hedgehog found in Britain has the scientific name Erinaceus europaeus. This is the same species that can be found around Europe and, with the exception of some of the Scottish islands, they are present almost everywhere in Britain. Hedgehogs have even adapted well to urban habitats where they feed and nest in our wilder areas, parks and gardens. In more rural areas they utilise woodland edges and hedgerows where food and nesting spaces are plentiful.
A fully grown hedgehog measures approximately 260mm from nose to tail and can weigh in excess of 1.1kg, although this may be considerably less at certain times of year. The body of the hedgehog is covered in 25mm long spines which provide protection from predators: when threatened hedgehogs will roll into a tight ball with their more vulnerable face, belly and limbs tucked carefully inside.
Hedgehogs are omnivorous, feeding preferentially on beetles, caterpillars and earthworms, as well as slugs and snails. For this reason they are often referred to as the ‘gardener’s friend’. During the night they will travel long distances, eating as they go, before finding somewhere safe and sheltered to sleep during the day. A single hedgehog may travel up to 2km in a single night!
Between November and the end of March, hedgehogs hibernate to conserve their energy, as there is very little food available for them during these months.
Current status of hedgehogs in the UK
In the mid-1990s the JNCC produced a review of British mammals, in which the population of hedgehogs in Britain was estimated at 1.55 million. Since then citizen science schemes such as the BTOs Breeding Birds Survey and Garden Birdwatch, together with PTES’ Mammals on Roads and Living with Mammals have all contributed data to the picture, reporting significant declines in both rural and urban areas.
This picture is a cause for concern, not only for the hedgehog itself but because, as a generalist species, their presence is a good indicator of ecosystem health. Their declines suggest a loss of key soil invertebrates and important landscape features such as hedgerows as well a reduction in habitat connectivity.
As a result of these declines, the hedgehog was made a priority species in 2007 as part of the UK Biodiversity Action Plan.
Encouraging hedgehogs in your garden
Many modern gardens are designed to be aesthetically pleasing but are not hospitable for local wildlife. Tidy lawns and well maintained fencing, although neat to human eyes, provide little to attract the humble hedgehog. However, there are a few simple tips you can follow to make your more garden more appealing to them:
• Attempt to keep some areas wild and overgrown, as this will provide secure nesting and feeding spaces.
• If you have a garden fence, cut a hole at the bottom measuring 13 x 13cm as this will allow hedgehogs to pass through on their nightly wanderings. You could also remove a brick from the bottom of a wall or dig a channel underneath.
• Try not to use pesticides or slug pellets, as these are poisonous to other animals as well as slugs.
• Provide a shallow dish of fresh water along with some dog or cat food, some chopped unsalted peanuts or some sunflower hearts.
• Make or buy a hedgehog home. This will provide a safe and warm space for hedgehogs to hibernate throughout the winter, and also for a female to raise her young in the spring and summer.
• Take care when mowing or strimming your lawn, particularly if your grass is very long to begin with.
Other ways to help
• Contribute to Hedgehog Street’s Big Hedgehog Map – by pledging to make a hedgehog hole in your garden wall or fence then registering this on the map, you can contribute to the network of hedgehog-friendly gardens that is being created all around the UK. You can also report a hedgehog sighting for addition to the map.
• Join the British Hedgehog Preservation Society – as well as raising awareness of hedgehogs and the challenges they face, the BHPS also helps to fund research into hedgehog behaviour and provides financial support to hedgehog carers.
• Take part in a citizen science project – schemes such as the BTOs Breeding Birds Survey and Garden Birdwatch, together with PTES’ Mammals on Roads and Living with Mammals surveys, provide essential data about our local wildlife, all of which would be impossible to collect on such a large scale without the help of 1000s of volunteers.
Presents scientific and down-to-earth information about one of Britain’s best-loved wild creatures, the bumbling and endearing hedgehog. The principal ‘popular’ book on the hedgehog for over thirty years.
The Romans regarded it as a weather prophet, and modern gardeners depend on it to keep their gardens free of pests. Hedgehog explores how the characteristics of this small creature have propelled it to the top of a number of polls of people’s favourite animals.
This Mammal Society booklet is written by UK hedgehog expert Pat Morris. It includes lots of general information on the biology and behaviour of the hedgehog.
Hedgehog houses and gifts