A wet Bank Holiday Monday

What does one do on such a day? I sit in the conservatory and watch a myriad of house sparrows on the lawn devouring yesterday's scattered seed, accompanied by some sprinting blackbirds, a couple of magpies, a woodpigeon and rather a large, seemingly lonely, carrion crow which seems to have lost its way, but waits for me every day in the branches of a nearby tree before it glides expertly on its massive black wings, on to the lawn, causing all other birds to seek the shelter of the garden hedge. In fact I quite like him / or her. How does one tell the difference?