Friday, 1 June 2012

Bank vole masquerading

Here's this fine fat female water vole in the top photo, then in the picture underneath a wee bank vole, both from the same ten yard stretch of stream - in fact the bank vole is right next to a water vole latrine. But it was impossible to confuse them. Even though their fur colour is similar (field voles are greyer), the bank vole's movements are super-quick and jerky, completely different to the waddling water vole. W-vs can move very fast when threatened, but if they feel secure then their gait is quite leisurely.

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