Just went out to let our 9 girls out of pen and one is making very lound squaking noises when she breathes. Sounds like something blocking airway. She's not gaping or gagging, and there is no discharge at all. Don't see anything in her mouth and she's still trying to eat grass. Shes a RIR and just over a year old. Everyone else is fine. Please help!! Any ideas? I'm going to try to download a video so you can see exactly what she's doing.