Ponypoor
Professional Chicken Wrangler
Ah I see NWT person cold yet??? Haha. Bet it's getting dark....Dirt is in very short supply where I live. Most of the soil around here got scraped away about 15,000 years ago. One end of the chicken run is exposed bedrock, and the other end it is only about 2-3 inches deep. If I rake out all the existing dirt and poop, there would be nothing left. That would be hard on the chicken's feet, plus the point is I want chickens to build soil for me.
Well in that case how about a mix of sand, gravel and if you can find it used horse sheep cow bedding or softwood shavings. Mix 50 percent sand 30 percent gravel and rest shavings or old horse cow sheep bedding.
With any soil for planting you need it to not be too fine or you will end up with mud, the sand gravel mix will give you drainage and the rest will be organic matter which plants need
Of course I am betting right now you are entering the wonderful throws of that joyous season we call winter so not much to be done until spring breakup.
You should post some pics of your critters from way up there!