I had a young hen around 9 months old, I bought her as a chick from L&M supply, her symptoms were anemia, weight loss, and panting or labored breathing, ruffled feathers. All the articles I've read talk about eye bubbles and mucus. She didn't have that. She would drink water but couldn't get her to eat anything solid. She had been given corid about 2-3 weeks before as a preventative. I gave her eprinex for possible worms. I also tried tylan orally. nothing helped. the breathing just got worse. Before she passed she had thick mucus in here mouth, that was just before she died. there was no discharge in her nostrils, or wheezing, gurgling. nothing like that.