[MartHale7]

For the bottom I like to use old logs decaying… and brush… Then Tons of leaves, then on top of that your chicken coop scratches…. IDon’t want to mix that with the top layer as wood that has not broken down will pull nitrogen from the soil and will be bad fro your plants but if you have a lot of chicken manure mixed in there will be no lack of nitrogen. But for bottom fill that would work, I just find that old logs use up the space fast and you end up with a hugleculture like permies use.