I popped into Grafham Water this morning for the Red-rumped Swallow (which showed really well) & on the walk back to the car park I was treated to a Weasel hunting voles. It was chasing them for c5 minutes. They were shooting out of the longer grass along a path, back into the grass, with the Weasel in hot pursuit. The Weasel caught something (not sure what) & went into a pile of uprooted tree stumps with its prey.
If anybody goes to Grafham after you go through the gate to walk along the dam wall there is a group of partially uprooted tree stumps, on the other side of the wall c50 yds past the gate, with brambles around them. This is where the Weasel was hunting & went into with its prey.
Cheers, Simon
A few pics of the R-r Swallow & (rubbish ones of the) Weasel are on
www.flickr.com/photos/sinlw