Today I first heard, and then saw, dozens of frogs in courtship. No spawn yet, but I'd bet on finding some by the weekend.
It's interesting to note that the Pale Brindled Beauty moth - Phigalia pilosaria - is at the end of its season (December- March), when most moths are still safely tucked away in their cocoons:
Still no Willow leaves, although the buds are most certainly getting larger. Again, I think bud break will be this week.
Given the sudden rise in daytime temperatures, I'd expect to see queen bumblebees and the earliest hoverflies out and about soon, too: I got buzzed by a Bluebottle earlier in the week.