Hi, I have an 8 month old Leghorn who started gasping for breath last night, like she's having an asthma attack. She is wheezing both when she breathes in & out. I was able to look a long ways down her throat & there seems to be no obstruction or swelling/redness. If anyone can help me to help her, I'd be grateful for any advice. Ive had chickens for 3 yrs but never seen this. She looks healthy otherwise- clear eyes & no discharge. None of the other chickens are affected or seem sick in any way.. She's obviously in distress but I have no idea what to do. Our birds give us eggs, but they are pets. Please help, thank you.