Definitely a red letter day - I've just heard my first chiffchaff of the year. It's a marvellous morning here, with warm sunshine, but a covering of frost in the shadows. Before starting work I thought I'd check out my 'followed' tree, which is showing no sign whatsoever of coming to life.
But it's surrounded by other species that are. The buds on field maple and hawthorn saplings nearby are just beginning to burst open and the hedge bank is now covered in dog's mercury.
And to cap it all the chiffchaff. I've mislaid my 2011 diary, so can't say when I heard last year's first chiffchaff, but it does seem early.