I have been sifting chicken run compost this past week, mixing it with topsoil 1:1. I use that mix to top off the last 6-8 inches of my raised garden beds. It really works well for me.
I snapped a quick picture of me dumping grass clippings into the chicken run.
The chickens will scratch through all those grass clippings looking for bugs to eat. And, they eat some of the grass clippings as well. It seems like it takes them less than an hour to have that mound of grass clippings leveled out and mixed into the other compost litter in the chicken run.
Having said that, we have been going through some really hot days here and I found that some places, with maybe 6 inches of grass clippings in a layer on top, that the grass was heating up and cooking. When I flipped over some grass clippings, it was actually ashen white underneath from cooking off.
That's hotter than I like for my chicken run compost system. I don't think bugs and worms could live in something that hot. So, for the past few days, I have been spreading out the grass clippings from the mower bins when I take them to the chicken run. The grass clippings are drying out fast in this heat, but when spread out at the very start, they are not cooking as hot.
I let my chickens scratch and peck the compost litter, which usually gives it enough of a good mix. But in this heat, I have considered going in there with my mini tiller and tilling in the fresh grass clippings with the leaves and other litter already in the chicken run. Also, I put the sprinkler on part of the chicken run yesterday because I have a grazing frame with new grass growing in there, and I don't want that to dry up and die out.
I normally am hands off on all the composting going on in the chicken run, but really hot days with no rain has me looking at the process and wondering if sometimes I might need to pay more attention to the chicken run composting system and intervening with extra water and tilling if required.

Fortunately for me, we are getting rain today, so the chickens don't need any help making good compost for my gardens. But I thought I should post how a normally hands free operation might sometimes be improved with small interventions. Especially if you go through a period of hot weather with no rain - which is not normal for me.