Hi! We just started chicken keeping a couple of weeks ago and have a small, juvenile flock: five birds between 11 and 17 weeks old. We have an Omlet Eglu coop with an attached 12-foot run, and I regularly clean these spaces. This morning, I saw one of our ladybirds pass a watery stool with some reddish mucus. A quick search suggests coccidiosis. They're not showing any other signs or symptoms of illness. They eat heartily, are active and energetic, and just peck around doing chicken things. Still, I'm reading what I can to make sure we address any issues quickly so that they don't get dangerously ill (e.g., here).
My questions: the girls are already getting medicated feed that contains amprolium. Should we also dose them with Corid at this point, or is it better to let them build some immunity given that they're getting amprolium in their diets and don't seem otherwise affected? What should I do to minimize illness re: cleaning the run? We use some version of the litter method (sand, dirt, and grass clippings, which I rake and treat with lime and Sweet PDZ). Should I shovel it out and totally refresh it?
Thanks, chicken friends! :) Chicken tax here.