Each of the 12 species covered – Woodpigeon, Magpie, Robin, Blackbird, Song Thrush, Wren, Blackcap, Blue Tit, Great Tit, Starling, Chaffinch and Goldfinch – has a short description explaining some fascinating facts about that bird. Then the reader can press the relevant button on the panel on the side of the book and a 10-second burst of the bird’s song will be played via the accompanying speaker.