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Field vole
The field vole or short-tailed vole (''Microtus agrestis'') is a grey-brown vole, around four inches (ten centimetres) in length, with a short tail. It is one of the most common mammals in Europe, with a range extending from the Atlantic coast to Lake Baikal. These voles are found in moist grassy habitats, such as woodland, marsh or on river banks. Although they make shallow burrows, they usually build nests above ground. They are an important food source for owls and some other predators and their population size tends to peak and trough cyclically. Field voles breed prolifically, mainly in summer, but often all year round, even under snow. Females produce up to seven litters a year, each averaging from four to six young which are weaned after about fourteen days. The field vole is both widespread and common and is listed as being of "Least Concern" by the IUCN.
==Description==
The field vole is a small, dark brown rodent with a short tail, distinguishable from the closely related common vole (''Microtus arvalis'') by its darker, longer and shaggier hair and by its more densely haired ears. The head and body length varies between and the tail between . The weight is . The voice is a faint, low squeak and it also emits a range of chattering sounds.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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