I have 2 different flocks of chickens. The first flock will be 2 years old this May and my second flock will be 1 this month. In many of the books I have read, they said that after a chickens first few years they begin to cost more to keep than what you get in egg laying. By no means do we make money from our chickens since we aren't in the business of selling eggs, however we don't want to be feeding our chickens and spending more money on them then need be. Our thoughts were to get some chicks this month so they would be laying by mid-late summer and then cull our original flock this fall. How do all of you handle when to rotate your flocks?