That time of year again, the RSPB’s Big Garden Birdwatch, one of the world’s biggest exercises in citizen science. The usual drill: one hour of birding in the garden, with the counts being the maximum seen at one time.
blue tit × 3
great tit × 2
coal tit
long-tailed tit
chaffinch × 3
goldfinch
woodpigeon × 2
pigeon × 4
magpie × 3
blackbird × 3
song [...]