Wood mouse (Apodemus sylvaticus)

Wood mouse at entrance hole
Loading more images and videos...

Wood mouse fact file

Wood mouse description

GenusApodemus (1)

The wood mouse (Apodemus sylvaticus) is the most common native rodent in Britain (2). It has brown fur with a reddish tinge (3) and a white or greyish belly (2). The alternative common name of this species is the long-tailed field mouse, as the tail is often roughly the same size as the combined head and body length (3). This species can be distinguished from the similar yellow-necked mouse as it lacks a yellow collar that forms a bib on the chest (2).

Ratón De Campo.
Head & body length: 81-103 mm (2)
Tail length: 71-95 mm (2)
13-27 g (2)

Wood mouse biology

Wood mice are generally nocturnal, but males, or females suckling young may be active for short times during the day (4). They feed on seeds, invertebrates, fruits, nuts, seedlings, moss and fungi (4), and food is often stored within tunnel systems (3). All mice engage in 'refection' in order to fully digest food; they eat soft faeces that have already passed through their digestive system once, allowing carbohydrates to be fully digested the second time around (3).

Breeding occurs from March/ April until October, and peaks in July and August (4). In summer, females defend breeding ranges against other females (4). Dominant males may be aggressive, and have been reported to chase and even kill juveniles (3). Before mating, males are known to produce a string of ultrasounds, which may serve to pacify the female (3). Gestation takes 25 or 26 days (3), and the litter, which consists of two to nine young (4), is born at night within the nest (3). Nests are made in underground tunnels, inside hollow logs, bird or dormice nesting boxes or in dense vegetation (3). Between four and seven litters are produced each year (4), and females are able to conceive whilst still suckling the previous litter (3). The young are fully weaned after about 18 days, and usually start to breed the year after their birth, but if they were born early in the year they may breed during the year of birth (4).

Wood mice do not hibernate, but during winter males and females may group together when sleeping for extra warmth (3). The maximum life-span is 18 to 20 months. This species has many predators, including foxes, weasels, cats, owls and kestrels (4); the wood mouse has evolved a number of strategies to avoid these predators, it can make impressive leaps to safety, and can shed the skin of the tail if it is gripped anywhere other than its base, allowing the mouse to escape. The skin does not grow back; instead the area of the tail dies and falls off (3).


Wood mouse range

Widespread and common throughout Britain and continental Europe, reaching as far north as southern Scandinavia (4). The wood mouse is not present on many of the smaller British islands, but where it does occur on islands it is often the result of introductions (4).

You can view distribution information for this species at the National Biodiversity Network Atlas.

Wood mouse habitat

A highly adaptable species, the wood mouse exploits a wide range of habitats, providing that they are not overly wet (4).


Wood mouse status

The wood mouse is classified as Least Concern (LC) on the IUCN Red List (1).

IUCN Red List species status – Least Concern


Wood mouse threats

Although this species is not threatened at present, loss of woodlands, hedgerows and changes in agriculture may all negatively affect wood mice. Chemicals used in agriculture may also pose a threat, either directly, or via contamination of food sources (4).


Wood mouse conservation

No conservation measures or legal protection is in place for the wood mouse, which is an important source of food for many carnivores and owls (2).

View information on this species at the UNEP World Conservation Monitoring Centre.
There may be further information about this species available via the National Biodiversity Network Atlas.

Find out more

For more on the wood mouse:



This information is awaiting authentication by a species expert, and will be updated as soon as possible. If you are able to help please contact:



An organism that feeds on flesh. The term can also be used to refer to a mammal in the order Carnivora.
The state of being pregnant; the period from conception to birth.
A winter survival strategy characteristic of some mammals in which an animal's metabolic rate slows down and a state of deep sleep is attained. Whilst hibernating, animals survive on stored reserves of fat that they have accumulated in summer.
Animals with no backbone, such as insects, crustaceans, worms, molluscs, spiders, cnidarians (jellyfish, corals, sea anemones), echinoderms, and others.
Active at night.
In mammals, a process wherein food passes quickly through the gut and is re-eaten as it leaves the anus.
Sounds that are above the range of human hearing.


  1. IUCN Red List (March, 2011)
  2. The Mammal Society wood mouse fact sheet (August 2002)
  3. Leach, M. (1990) Mice of the British Isles. Shire Natural History. Shire Publications Ltd, Aylesbury.
  4. Macdonald, D. W. & Tattersall, F. T. (2001) Britain's mammals- the challenge for conservation. The Wildlife Conservation research Unit, Oxford University.

Image credit

Wood mouse at entrance hole  
Wood mouse at entrance hole

© Mark Hamblin / gettyimages.com

Getty Images
101 Bayham Street
United Kingdom
Tel: +44 (0) 800 376 7981


Link to this photo

Arkive species - Wood mouse (Apodemus sylvaticus) Embed this Arkive thumbnail link ("portlet") by copying and pasting the code below.

Terms of Use - The displayed portlet may be used as a link from your website to Arkive's online content for private, scientific, conservation or educational purposes only. It may NOT be used within Apps.

Read more about



MyARKive offers the scrapbook feature to signed-up members, allowing you to organize your favourite Arkive images and videos and share them with friends.

Play the Team WILD game:

Team WILD, an elite squadron of science superheroes, needs your help! Your mission: protect and conserve the planet’s species and habitats from destruction.

Conservation in Action

Which species are on the road to recovery? Find out now »

This species is featured in:

This species is featured in the Wytham Woods eco-region

Help us share the wonders of the natural world. Donate today!


Back To Top