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Bank Vole Clethrionomys glareolus Length 13-17cm Plump, richly coloured vole. Makes underground nest and radiating shallow tunnel network; forages for seeds and fruits above ground. Adult has compact body and mainly reddish brown fur, paler and greyer on chest and belly. Relative to Field Vole, has large ears and long tail. Island ssp. are larger and heavier than mainland animals. Squeaks if alarmed. Common in deciduous woodland, hedgerows and field margins.