This thread has given me a few jobs for tomorrow. I've got 2 clumps of green sorrel and 4 of the red variety. Ima Gunnar pot some up to rotate through the poultry yard as well as under a couple of fruit trees.
Thanks for the suggestions.
Composting, everything. To the extent that my neighbour, a mowing contractor, supplies me with vast quantities of clippings and leaves that my chickens turn into the perfect soil amendment.