Inspired by national surveys conducted by the Royal Society for the Protection of Birds (the RSPB), where you spend an hour in your garden tallying up how many birds visit during that time frame, Do Bird depicts a tatty piece of writing paper, covered in doodles, stains, rough drawings of birds and simple colour identifiers. Lewis has counted blue tits, robins, pigeons and parakeets, accompanied by scratched tally marks: ‘I imagine the survey to be wildly inaccurate,’ he says. ‘People can count fifty pigeons, but they are likely the same five or so returning multiple times.’

To “do bird” is to spend time in prison - another environment where tallies are an important symbol. For Lewis, the RSPB bird survey is a uniquely British tradition, like a church fête, country fair, trainspotting, twitching and morris dancing, and its inherent inaccuracy is indicative of a national attitude of irreverence and imprecision that can have serious political consequences.