We are new to chickens and we currently have them on a 12 grain feed that our feed store currently custom makes. Right now we have a total of 31 with 4 of them being roosters. We want to be able to use them for eggs, replenishing the flock, as well as for food. We are hoping to get more this spring so that we have a good solid supply. 1.) When is a good time to start butchering? 2.) Does the book Backyard Chickens that's from this website cover butchering? 3.) Is my feed okay for them, any feeding secrets? 4.) Any tips I need to know? Thanks in advance!