I have a 3 year old peahen that got out of the barn and spent a few nights up in the top of a tree in extremely cold Canadian temps. She back in the barn but now she is gasping. This has been going on for about 3 weeks. I think she has a respiratory infection. No swelling around her sinuses but gasping and sneezing. She's eating and drinking but spends lots of time with her head tucked into her wing. What do you guys suggest I do?