MATT SEWELL, who has been described as “the Banksy of the bird world,” is an avid ornithologist and artist. He is the author of Owls, Our Garden Birds, Our Woodland Birds, Our Songbirds, and Penguins and Other Seabirds and has illustrated for the Guardian and Big Issue among many other publications. His art has been exhibited in London, Manchester, New York, Tokyo, and Paris.