It’s 70sqft
I’m sold on deep litter at this point- so equal parts brown material and green material??.
Here’s a picture!!!
To manage the manure in the run I don't follow a composting 'recipe',
because I'm not really making 'compost' and certainly not a hot compost.
I put almost nothing but 'browns' in the run,
to 'eat up' the chickens 'green' deposits.