I have a little arucana hen that is having trouble beathing and can't not find a reason. We have only had her a couple of months and this is what I know about her: Older than a year - other than that age totally unknown. She only lays on occasion, so I am guessing fairly old. She came with two pullets ( matching ) they seem totally fine. All of my other chickens seem fine, as do my ducks - they all live together. Found no lice, or other kinds of critters on her. Has what looks like an old "bumblefoot" type of injury but isn't infected or hot. Nasal passages look clear, eyes are clear Just wheezing through her mouth really hard and comb is losing color. It was in the 90's today, but she has been staying under the coop - we had to squirt water under it to get her to come out. I did not notice the obvious wheezing this morning. She is getting weak. I put her in the duck pool we had just cleaned to cool her down just in case and she just sank into my hands. I have her inside now and she is sleeping in my lap. Please - any suggestions would be welcome to help solve this mystery - I don't think she is going to make it much longer.