Thanks for the heads up. RSPB (I'm still a member, despite some concerns about RSPCA-style diseases of governance) may have sent me a form, but it may have been shredded by now because it looked too much like a begging letter.
Sadly many of the birds around/in our garden seem to be very good at avoiding it over the Birdwatch weekend. Last year I didn't see anything apart from woodpigeons, magpies & the odd jackdaw. We usually see (hear) lots of titmice, nuthatches, dunnocks, blackbirds, robins, wrens, jays, song thrushes, bullfinches, & possibly goldfinches. We have even had during the last fortnight a grey heron researching our tiny pond, a buzzard flying over & a raven (or a crow with a very deep voice). It's difficult, since the disappearance of house sparrows, starlings, greenfinches & chaffinches troubles me.