Having backyard chickens can be a fun, educational, and rewarding experience. There are many reasons why people keep backyard chickens, with availability of fresh, colored eggs, food security, and enjoying the birds as pets among them. However, for some, the goal is to obtain the rich manure that chickens produce to fertilize their garden. There is no better farmyard manure for the garden, as far as the nitrogen content, than poultry manure.