Field-mouse (Mus agrarius Pall)

Source of the photo:
Author of the description: 
André Anita

Scientific Classification

Kingdom: Animalia

Phylum: Chordata

Class: Mammalia

Order: Rodentia

Family: Muridae

Genus: Mus

Species: Mus agrarius Pall

Distribution and habitat 

It can be found in Europe, Siberia, Central Asia and at the height of 2000 metres in the mountains.
Forests, forestsides, gardens, large treeless plains, and haystack are its hiding places. In winter it hides in chambers, warehouses, houses, and as soon as possible it settles down in the upper part of the apartment, in the attic.

Morphology and build-up 

This species is approximately 20 cm long, the body length is 6-8 cm. It has yellowish-brown body and tail, while its legs and belly are white. It has eight teats.


It consumes ears of cereals, grasses, seeds of cherry and beech, walnut and cortex in tight situations. However, likes to eat insects, worms and even small birds may also be a part of its diet. It is typical that it accumulates supply for winter.


It does not hibernate in winters. It is active day and night, though can rarely be seen during the day as is more active at night. Has poor vision, but its hearing is very sensitive, especially for high-pitched sounds. Moves deftly, jumps and swims well.


Like all mouse species, it is a very reproductive animal, especially in warm places, where it procreates throughout the year. It gives birth 5-6 times per year. Can have up to 1000 offsprings when the appropriate circumstances are granted. Expectation of life is 2-4 years.

Role in the ecosystem 

Rodent. It is in the diet of predacious birds.

Role in the soil

If the soil is soft, "spongy", it is likely that there is this species present.


Not endangered animal.

Exploitation by humans

Causes a lot of damage for people. In winter, chews a lot of things ensconcing into houses.