Classic starry paw print.
I witnessed a major spat between the brown vole above and the scruffier, greyer one below. Scruffy lost, and went to feed on roots at the far end of the ditch. Water voles are extremely territorial and often sustain injuries from fighting. They 'box' and bite.
I'd gone to check on another colony, and was photographing burrows when a small snout appeared just in front of me. We watched each other for about two minutes, before the vole went back inside.