Hi, I know how awful this is going to sound but I made it better.... In april I bought 60 chickens, I built a 20ft by 15ft run and a 6 foot by 8 foot coop(for egglaying only). This is obviously too small for that many birds but I was letting them grow in here with plans of building a bigger run. As the time came along to build the run I didn't have the money. So yes the pen is very overcrowded. I sold 15 a month ago and that didn't seem like much. So today I sold 30 more. Now my pen is better and my birds are happier and so am I. My feed bill was at 100 dollars a month. So before you yell at me I am just venting and sharing with you my experience and my lesson learned. Now comes the fun part. How much feed will 15 chickens eat a month? I know that it depends on how I feed them and the bird but I would like an approximation. I want to make them happy and healthy. I have learned my lesson and have learned to fight my chicken addiction and to be reasonable as to how many I have and how much space I have. They all went to a good home and will live happily ever after.