We have a leghorn mix that we got about a month ago. She still hasn't recovered all her feathers from molting but until this morning was acting fine. This morning I found her in the corner of the coop and when I picked her up she didn't struggle. She has one crusty eye, is very lethargic, and does not appear to want to eat or drink. She has s mucous discharge from her mouth, but doesn't have labored breathing. Any ideas?