I've been getting some very good advice in another thread about setting up a deep litter composting system in my chicken coop, and rather than continue to hijack someone else's thread with that discussion I thought I would start a new thread.
I hadn't heard about deep litter composting until I started using these forums and am very interested in it. It's a system where you use your chicken coop/cage to create compost.
About.com has the following explanation:
The deep litter method is one sustainable method of managing chicken litter in the chicken coop that many small farmers use. In the deep litter method, you're basically forming a compost pile of your chicken's poop right on the floor of the coop. Like a compost pile, you begin with a layer of pine shavings or other organic matter in the "browns" category. The high-nitrogen chicken poop is the "green."
You simply add enough shavings to keep the floor composting nicely, and the chickens do the aeration for you with their scratching behavior. Scattering corn on the coop floor encourages them. The litter has beneficial microbes - think of it as probiotics for your hens.
Once or twice a year or less, you clean the coop out. The resulting material can mostly be used directly as compost, though if you notice a few spots that are fresher than others, you might throw it into the compost bin for a while.
http://smallfarm.about.com/od/farmanimals/a/deeplitter.htm
My chicken coop is constructed of steel (an old tool shed converted) with the lower half of the walls made of steel and the upper half made of wood and mesh. It is covered with a steel roof and has a small, enclosed area with no windows at the back where the roosts and nesting boxes are placed. It's very draft-proof and weather proof and has a sandy floor which my girls love to dig dust baths in.
I live on a one acre block with a small orchard and lots of grass, so was planning to use grass cuttings and garden waste as the 'browns' for my deep litter.
GrannieAnnie says that the hens may eat too much of the grass/hay if I did this and that it is not good for them, yet I have read elsewhere on the forums, that a hen can have a diet of 75% grass.
I'd be grateful for anyone to chime in on this thread with your advice, experience etc with using deep litter. I am on a pension and can't afford to buy in shavings or straw very often, so the idea of being able to create deep litter from whatever I can glean from my land is attractive.