A Gardener's Guide to Happy Hens and Healthy Soil -- In this 320 page book, Andy Lee takes you step by step through everything you need to know to become a successful chicken grower using the permaculture chicken tractor. This is a portable, bottomless, shelter-pen designed and equipped to move wherever you need weed and grass control and soil fertility. Your chickens will have access to fresh food daily and your garden soil will benefit from the direct application of manure as the chickens are rotated through your garden.