I have a 6 week old bantam old english game chick that has a very swollen, mushy abdomen. I'm certain it's not a sour crop. It's his abdomen and around his vent. His feathers are ruffled and the swelling seems to be making it difficult to breath as he is breathing somewhat rapidly. He stands in a corner and closes his eyes and appears very uncomfortable. I've seen him attempt to poop a few times and nothing comes out. When he strains to poop it appears his vent is almost going to prolapse but it doesn't. He is eating and drinking. I suspect he has a blockage in his lower GI system. I've observed him eating wood chips on several occasions. He did have a very small amount of poop on it's vent so I cleaned that off with warm water and a paper towel and it came off easily. I inserted a Q-tip with olive oil just inside his vent hoping that would help things pass but after 24 hours he doesn't appear to be improved. None of my other 22 chicks are ill. I'm putting apple cider vinegar in their water and am considering separating this chick and trying molasses mixed in water for several hours then feeding some yogurt. Any ideas, advice, or suggestions?