400 chickens is on the low side for me. I think last summer I had about 800 with chicks. They make great compost! LOL. Slowly I am getting my numbers down. I am hoping to get down to 100.... maybe more with chicks and grow out. It is a full time job most of the time. I have done lots of things to reduce the work. Central waterers 5 gal feeders raised pens.....it all adds up to less work. If feeding is up to date I can just collect eggs, but as you guys know there is ALWAYS something that needs to be done with chickens.