My 2 1/2 year old Red Star hen seems like she can hardly breathe. She has to extend her neck and then gasps to get air, but if she doesn't extend her neck soon enough, she has a wheezing sound. She can still stand. This happened to her before, in August. On July 31, a week after a dog attack, which had basically scraped all her skin and feathers off from her back, she was recovering in our laundry room and we had a garage fire. She wasn't exposed to the smoke. I had to let her go back to the other chickens because we were having to move for a few weeks and the food and water would be in supply in the coop. But a few weeks after the fire, she was looking a lot better in her feather appearance, but she had started doing the wheezing thing. I thought we were going to have to end her misery that day, but the next day, she was completely fine, running around with the others and being fine. But now, it has come back. I don't know if something is stuck in her throat, or if she has an actual illness. Her comb is slightly on the purple side, witch I think means she's not getting enough air. It's warm today, at almost 11 o'clock, but it is not hot, yet. She doesn't have black around her face, in case anyone thinks it's dry or wet pox. I hate to see her suffer, and if we need to get out an ax, I need to know. I always put vitamins and electrolytes in the water, and so that might help with whatever. I don't know if I need to separate her, because I don't wan't to stress her out. How did it come back? Please help as soon as possible!