This was posted on the Fermented Feed for Meat Birds thread. It's a sustainable agriculture site and has TONS of free and/or cheap information on just about everything. (Marketing pigs, Shawn!) It's got info on poultry (coccidia & other diseases,) too. I thought we Natural Chicken Keeping people might find good stuff there.
Mel
https://attra.ncat.org/publication.html?pubsrch=coccidiosis&freeonly=all
https://attra.ncat.org/publication.html?pubsrch=coccidiosis&freeonly=all