One of my hens has been leaning her head back onto her back and acts like she has something caught in her throat. I can’t find anything on this but there is something wrong with her. Can anyone help me here please? She has been doing this on and off for a week or so. At first she was acting like she was having a hard time dealing/choking and it then stopped. Now she puts her head back on her back and her beak in the air like stargazing with goats. I’m lost here. Help!!