The Secret Dictionary of "Birds" From Amazon: "What kind of birds do you usually see? The first ones that come to mind might be 'sparrows, pigeons, crows.' However, there are many more diverse birds around us, and if you look to the other side of the world, you'll find birds with amazing appearances. This book explores the mysteries of 'birds,' which seem to be everywhere yet are full of secrets, answering questions like 'How does it work?' and 'Why do they do that?' With humorous and easy-to-understand illustrations, you can casually enjoy interesting stories about birds' bodies and lives. You can effortlessly gain knowledge backed by ornithology, making bird watching even more enjoyable. There are some creases on the obi (book band), but the contents are clean."