Hmm, infectious bronchitis does sounds pretty applicable here. Hoping it'll pass quickly with no casualties, or lasting affects.. Considering culling the one hen who is not doing well. She also feels skinny for how big she is. I was surprised. She appears to be eating well though.
I have a few ideas where this may have came from. I did add 2 EEs about 1½ months before any symptoms. No quarantine (trust me I'll never bring in new birds again) one sounded raspy and I asked about it, the person I for her from said she always had sounded like that since she got sick at a month old from ammonia build up, and the rest of his flock is healthy (not that that means anything). Wouldn't symptoms be noticeable sooner than a month though if it came from them?
Also, there's the bedding possibly. I switched to pine shaving which are so dusty it's ridiculous. After I noticed some symptoms I switched back to hay, and I have been cleaning up there poo every morning since, for over a week now. It's really clean in there, and dry, and ventilated well, and they free range all day. I also change/clean feeders and waterers daily.
Would it be safe to eat any birds that I would have to cull from being ill?
Just wanted to add that it appears to be moving slowly, as in not much has happened in 3 weeks since I started noticing symptoms. Hasn't gotten any worse or better..