So my hen has a problem with her lungs. She gurgles when she breathes and it becomes worse when she is stressed or breathing heavily from flapping her wings. She has a healthy appetite and never refuses food. She is a silky and ever since she started the lung gurgle she has lost her fluff and her color (she was once orange and now she is white). Her eggs break easily compared to the other silkies. Her eggs are also whiter than the other girls and slightly bigger. Ive treated her with oxine for 6 days for 15 mins because i thought she had a fungal infection of the lung. It doesn't seem like she is getting any better. What is up with this chicken?