Some people keep birds individually penned. Obviously you're not going to have 3 lb feeders for each cage, so it's helpful to know what sized cups to get to keep your birds healthyI can’t imagine why we are told that each chicken should have “x” amount of feed per day. How are you supposed to regulate that. I have 5 feeders for my flock so no bully can stop a lower ranked hen from eating. I feed Nutrena Egg Producer pellets and throw out scratch feed twice a day. They also get whole pumpkins to work on during the winter. (I stock up at Hallloween). Also whole grain loaves of bread from a local bakery and lettuce and other veg. This gives them something to do all day because any bored critter gets into trouble eventually. Free range spring summer and fall until the time changes.