Hi everyone - I've been lurking for a while, but this is my first post and I hope someone can give me some advice. I have a 2 year old Leghorn hen who sounds terribly congested. You know that sound when you're trying to slurp up the last bit of milkshake through a straw? That's what her breathing sounds like. She seems fine otherwise - her eyes are bright, comb & wattles are good color, she's eating, drinking and pooping normally. I've isolated her from the flock and it's been over a week now, but she doesn't sound any better. Does anyone have any advice for me?