This weekend is the RSPB's annual Big Garden Birdwatch survey - basically, you are asked to record the highest number seen of each bird species you record in your garden during a one hour period at any point during the weekend, and then submit the records to the RSPB. More here. It is a large-scale survey, generating relatively low quality but widespread data, but since there are so many participants across such a wide area of the UK, it has provided some useful longer-term trend information about our more common (and often increasingly less common these days) species of garden bird.
My list from this afternoon is:
Wood pigeon: 4
Starling (noisy little blighters): 9
Carrion crow: 2
Coal tit: 1
Dunnock (Hedge Sparrow): 1
There was a sparrowhawk which, technically speaking, wasn't in my garden, so I'd better not put it in - shame! :¬)