Two day ago I noticed my rooster just sittingout in the snow gasping. Stretching his neck out and opening his beak wide. His comb was grayish purple. I picked him up and brought him inside. I noticed first that he had mites so I sprayed him for those. Then I got on BYC and searched previous threads. I decided the most likely culprit was gapeworm. Our feed store had Valbazen in stock and was willing to sell it by the cc so I got 1 cc and gave him half of it. I put him in a dog kennel in the basement with food and water. That first night he just lay down and slept. But when I checked on him the next morning he had drank all of his water but not eaten. He was still gasping but not as badly. Not stretching out his neck but still opening his beak to breath in. When exhaling he made a wheezing sound. When I checked on him that evening he had eaten quite a bit. His comb was also a lovely red color again. This morning when I checked him he had eaten all his food and drank his water down again. I gave him more food and water and waited for the afternoon so I could put him back outside when it was the warmest. Granted today that is only 20F. His breathing was even better today although not 100%. He still opened his beak just a bit when inhaling. I put him back out and he crowed (sounded like he had a terrible cold) twice. I figured that was a good sign if he could do that. However, when I went out to clean out the coop and put down new bedding he was siting and gasping again. I put him in the coop where it is a bit warmer since the sun beats directly on it. So is it gapeworm? Is it respiratory? Is the cold causing extra problems? He is 8 and has been out in colder winters than this. Never had a heater or anything in the coop. None of the other chickens are showing any signs of problems but will all be wormed just in case. Any thoughts? Does he need to be kept inside until the weather warms up a bit? Inside until I re-dose him next week? I don't want to spend a ton of money at this, he is a chicken after all, but I'd like to help him if I can. I'm rather fond of the old guy. He's never made an an aggressive move towards anyone adult or child. I'd kinda hate to lose him.