Frogspawn in my garden pond on the English Riviera. The first clump appeared on 15 February. I've been keeping records since 2007 and the latest appearance was 19 February so this was close to that. The majority of first sightings have been in January.
@Pertinax Early in January, although I didn't actually see any frogs, I thought there'd been disturbance in the pond. And then the long cold spell hit us, so any first-comers must have been lying low at the bottom of the pond since then, praying for a rise in temperature.