Chicken math exists alright. And it sucks hard sometimes. Our chicken math just went down by five today.
Five of our easter eggers, we confirmed with this same issue, and four of them happened to have major bumble (into the bone.) Still got five confirmed cases of it in our black australorps. We cant afford to medicate 20 + chickens, 10 turkeys, and seven ducks. We had to cull five today, and still have another five to go today to make it managable for our 10 survivors (we weeded out the worst of them while we went over a general health check and quarantined them the sick ones.) Then treated the ones we're not gonna cull.
On another note, one of the survivors is gonna have her wing feathers clipped.... She gave us heck trying to catch her for treatment today. She kept flying ontop of the coop.