Bank Vole

This photo was taken in my garden during July 2011.
The technical information is as follows.
Camera - Canon EOS 5 Mk IID
Shutter speed - 1/800
Aperture - f10.0
Lens - Canon EF 500mm f4.0 L IS USM plus Kenko 68mm Extension Tubes
Focal Length - 500mm
EV -1.0
ISO - 1600