Hello everyone, I have lurked here for the last 2+ years and have honestly really depended on a lot of advice given on other threads for my own girls. I've now come to the point where I need some personal assistance ! And what better place to come? I have a mixed flock of 12 girls. 3 hens and 9 pullets. One of my hens started shaking her head and had a clear, thick fluid coming out of her beak for about a day and a half. There was no sneezing or coughing and she was eating just fine. Her crop was emptying and she otherwise didnt seem to be in any discomfort. I started Tylan50 as I was sure it was the start of a respiratory infection as I didnt notice anything abnormal in her mouth or any smells etc. I tried this for a few days and her fluid from her beak stopped and the scratching did but the shaking hasnt stopped and now all of the girls are shaking their heads. I bought fish zole 250 and acidified copper sulfate to treat canker as I felt that had to be my only next option. It is day 2 on the antibiotics and day 2 of the water solution and everyone is STILL shaking their heads. I was sure it was likely the VERY beginning of canker as the antibiotics didn't help but that's not helping either! What am I doing wrong? Everyone is laying and looks amazing otherwise. No one is hunched up, still no coughing or sneezing, colors are great, eating, drinking, pooping, laying..... what piece to this puzzle am I missing? Thanks so much!