I live in rural VA and there are no vets in the area that service birds other than production chicken facilities.
I would have sent this one in for testing through Extension Service but she died on Thanksgiving and they will not open again until Monday.
We had 3 pens at the beginning of this tragedy year but two were built in the woods and since this all started with Blackhead in September - and since cool, wet pens seem to be a problem, the hens have all been removed to the one large dry, sunny pen. This is all described in my initial post. The 3 cock birds are all free roaming at the moment.
My first post describes the September illness through apparent recovery in early November. When we were working in the 'sick' pen, we did net the one cock bird that never showed illness to treat him with wormer down the throat. The sick birds also got it that way because they were too weak to get away. But - the capture of the well bird was not easy and we identified a risk associated with both capture and improper dosing during a struggle. It was a risk management decision to treat flock through drinking water and poops have all been normal to occasional loose for the past 3 weeks. No one has shown signs of sickness since all the initial treatments until this hen showed bloody stool this past Monday night. Just to re-emphasize, no sugar was added to water (since 11/10) until Tuesday and she died Thursday.
The poos during blackhead were classic sulfur yellow. We were able to find Emtryl and treat. After that cleared, we had two birds start with the loose dark, bloody and green stools that seemed to line up with the Coccidiosis photos. By the first week in Nov, everyone was fine but we followed with maintenance protocols that continued meds until 11/10.