@lazy gardener
I did an experiment this last year and I really like the outcome. I put every bit of the indoor pine shaving litter out onto the run instead of the garden. I was hoping to create a winter yard where they could still scratch and get worms throughout the winter if I could make it deep enough.
My idea was that in the spring it should be broken down well enough to dig out and use on the garden as composted litter.
It worked better than I could have ever imagined.
When I dug down in the spring it was beautifully broken down into some of the richest soil I've ever seen. Smelled heavenly like rich soil. Was full or worms. We then dug it out by the wheelbarrow-fulls and put it on the gardens. My daughter and son in law shoveled out a pick-up truck load and took it to their house; my other daughter did the same and used it alone in a raised garden.
Both of those gardens are thriving beyond anything they've ever had there.
I'm sold on letting it compost right out in the chicken run. We didn't even come close to removing it all and we continue to put the wood chips and wood shavings on from the chip piles and inside the chicken house as we clean out.
I absolutely love the results! Both for the birds health and the garden's!