This turned long... grab a cuppa (doggit, won't let me use emojis till I fix phone & byc account)
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I would turn the whole cement pad (7x10?. 70 Sq ft?) into the coop & run. As others have stated, you can do the deep woodchip & other natural products as the bedding. Going to see if you posted sizes? I think you did...
To prevent boredom & to save the rest of the yard paddocks (can still do two?), you can build several "grazing boxes" & plant in them. Greens grow through the wire on top. Maybe some veg - don't know your growing zone. Also hanging a food "cage" - that can house good weeds for them to peck at. Hanging it means they have to follow it. Hanging apples & heads of Cabbage. Cauliflower & brocolli don't work well - break apart & fall off the string when they start pecking at it.
Build 2 "food towers" - putting a roost between...
Once again my phone has grayed out my icons so can't do an ez link. Copy & paste!!
https://www.backyardchickens.com/threads/chicken-food-tower.1480872/
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If you garden or want to get started, keep the garden box, add buckets & bags & grow. You can protect the plants & still use the yard as runs. If you plant in the ground, fruit shrubs, protect them, too. If you rent or plan to sell, pot up in larger buckets or containers. When moving, can transfer as bare roots & sawdust.
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Even w/ concrete for base in run, if you want to create compost w/ your run bedding, you can. The woodchips best for base. Build a small compost bin, a ring of wire will work, cardboard boxes - a larger one or cut a couple pallets in 1/2 to make 4 sided bin. Add whole or shredded cardboard, yard & garden waste, food scraps, what you pull out of your coop or off the poop boards. Leave the top open allowing chickens to get into it & scratch. After a couple of weeks, take bin apart & let chickens scratch it flat. You can either start a completely new one, or you can pitch the spread out contents, back in after they've scratched & manure it & add to it. At any point, you could add a handful of fish bait worms (red wrigglers). If your pile gets hot, they will move to outside areas. A smaller bin like this probably won't get hot enough to kill weed seeds, but it might... when you open the bin, birds will have some snacks. You bedding should be deep enough they can burrow. But happy chickens.
Gardening w/ chickens You Tube -
- Parkrose Permaculture - PNW - Small yard in neighborhood, small number of chickens & ducks
- Edible Acres - NY small yard & 6 acre nursery in different location. LOTS chicken vids w/ composting
- Geoff Lawton - permaculture in Australia - using chickens in small spaces to build tons of compost. Greening the desert - fascinating.
- Perma Pastures - here in NC. Details on small (er) compost ring & chickens.
- Gary & Robbie - CA. Gardening mostly In containers. Using kitchen scraps & garden debri to constantly make new soil . Source - lots of humming bird feeders, drinkers & lots of pretty varieties... Also fascinating!
*** if you aren't into Gardening, well, guess I jumped off deep end. But so many ways to keep the backyard from turning into a pitted, biological wasteland w/ your chickies.