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Wood Mouse

(Apodemus sylvaticus)

Size: 8-11cm – 10cm tail Weight: 25-30g Lifespan: max. 2 years


Identification: A large mouse with a long tail, large hairy ears and large protruding eyes. The fur is yellowish brown on the back with white fur underneath. Sometimes a yellow spot in or streak down the middle of the chest is present. The similar but larger yellow-necked mouse is the only confusion species. However, juveniles are grey in colour and may be confused with house mice. They are sometimes known as long-tailed field mice. General: Common in both the countryside and urban areas, they thrive in almost all habitats apart from open mountain areas. Mating takes place during the late winter/early spring. The nest is usually underground or in any suitable hole where the young remain until they are weaned at Chest mark 18 days - they develop quickly and can breed at 2 months old. They are highly adaptable and opportunistic, being omnivorous and feeding on everything from seeds, leaves, insects, worms, roots, fruit and carrion. They are very agile and can feed nearly everywhere, sometimes even utilising bird boxes. They have many native predators, particularly owls, as they mainly forage at night - domestic cats are also a major predator. MH Distribution - UK: There are estimated to be approx. 110 million wood mice distributed widely throughout the UK. population is stable. 17



Cambridgeshire Mammal Atlas