My 27 week old buff Orpington who is normally very busy stayed on the roost this morning. I went out to get her and noticed she was breathing through her mouth. She was not interested in her scratch at all. She was walking very slow. I brought her in and put her in the dog kennel and gave her boiled egg with cipro and she ate a little of her layer mash. I brought her back out to see if she would perk up but she just stood there with her eyes closed. She had pooped once. It looked normal and her crop feels normal. We did have a big change in the weather (South Carolina) but the have a lot of ventilation in the coop with no draft. I have looked her over and I see no visible injuries. She is just tired and breathing through her mouth..... any ideas?