Good morning! We have our chickens in 2 large adjoining runs with 2 coops. Approximately 3 weeks ago we noticed one of the girls acting lethargic and didn't show much interest in food or water. Nostrils and eyes were clear, no wheezing but just not herself. We seperated her and she did well for awhile but then started a weird twisting of her head and opening her mouth like she was yawning. She unfortunately passed away yesterday but this morning we noticed another one of our girls starting to act the same way! Please help...anyone ever experience anything similar? We use pine shavings for coop bedding and hay for the run. Any advice would be welcomed..thank you!