I have about 20 different runs that are used for composting. Just keep dumping in the high carbon compostable materials and let the chickens scratch it up and drop nitrogen in it. Once a year I clean them out and make one giant pile that sits for 6 months before i put it to use in my Nursery. Sometimes I end up with a foot deep of of compacted poo, leaves, straw, grass clippings, wood chunks/chips/Cardboard and any other stuff I have thrown in. I suggest making one big pile away from the chickens for 6 months before you use it.
@Compost King, I suppose your online name says it all, so I want to ask about using cardboard in the chicken run. Do you rip or shred the cardboard or just throw it in the chicken run pretty much as is? I hear that cardboard actually breaks down pretty fast when wet, so maybe it's not worth the effort to shred it first. If you do shred cardboard, do you have a machine that does it for you? I have a paper shredder, but it would choke on cardboard.
I am all into reducing the amount of material we send to the landfill, but I have not considered cardboard in the chicken run. If I can make that work, it would reduce the amount of material we cart off to the recycle bins. Thanks.