Apodemus Sylvaticus Eating a Fat Ball

...was having a late beakfast when I spotted a little Wood Mouse sitting on top of the garden bird feeder and helping itself to a fat-ball sitting over it's head (incidentely, I thought it was a field mouse but Wikipedia tells me otherwise - http://en.wikipedia.org/wiki/Wood_mouse). Tried the full zoom on my iphone (did'nt even know it had one until now), but I think that, plus my dirty kitchen window has made itall a bit too blurry ...oh and trying to spot it is like 'Wheres Wally'!