This is not an important book, but it is very enjoyable. It introduces us to the amazing (and, for me, hitherto unexpected) diversity among different types of chickens. It is a wonderful tribute to the variety and beauty that can be developed by either natural selection or selective breeding. Or, if you are creationist in your outlook, it is a wonderful example of the Creator's whimsy. The book is mostly photographs; there are some some brief descriptions of the types photographed, and a little general background text - but basically, it is a photography book.