So we have a BIG fryer hen who is about 15 months old and about 15 lbs. She sounds terrible like she has emphysema, labored breathing, sounds horse when she tries to make her normal chicken sounds. Seems lethargic, but is still walking around. Has watery diarrhea. We have her isolated in a dog create and she has been drinking water and is eating a little food. We only have one fryer, she came with the flock we purchased, so we are not sure if she is past her time as a meat bird.......thoughts? Suggestions?