With Falmer Pond now flooded, the rats have taken to scurrying around the exposed roots of the trees. This makes them more difficult to spot, and means they are in almost constant deep shade. But crank up the ISO (1600), ignore slow shutter speeds (between 1/30s and 1/160s), and this is what you get.
Camera note: all shots taken with the Canon 7D and EF 100-400mm f/4.5-5.6L USM IS lens.