I had a day from hell yesterday, it was due and I was quite surprised it hadn't happen earlier. Oh yeah my trusted ol' bike got a puncture about 10 miles from home yesterday. So I had to walk and push my bike plus the 500mm lens a total of 12 miles (made a short detour). Boy was I pissed off I got about half way home (Cogenhoe Mill campsite) and decided to stop for a quick smoke, some liquid refreshment and sit on the small stone bridge, looking down on crystal clear water watching Perch and Tench lazily swimming up and down the river...easy life for some. I was contemplating wether to paddlock the bike to a lampost and jump on a bus and perhaps come back for the bike. There wasn't too much happening bird wise, a distant Chiff-Chaff and Buzzard was as exciting as it got birdwise.
When I noticed two little brown jobs in the bushes, it was a mammal and not a bird, but I wasn't sure if it was a Field Mouse or Wood Mouse at times in a certain pose it reminded me of a rat, but it was tiny.
A QUICK EDIT: THANKS TO TREVOR VIA TWITTER FOR THE ID HELP: WOOD MOUSE.