This is my first time raising chickens and I think I am losing one. I've thought I was losing one ever since I got them - my husband thinks I'm crazy. But this time, I don't think it's chicken hypochondria. I have a dozen straight-run chicks in four varieties. They are nearly 8 weeks old. They spent the first 6 weeks of life in a box in my basement eating medicated chicken starter rations. Two weeks ago, we moved them to a new, insulated coop (10x10). I've been putting electrolytes in the water ever since then. A few days after moving them in, I started them on a handful of scratch twice a day, along with their food and water. I've been mixing grit in the feed. I use pine shavings as litter. The last bag I bought was wet, and had a thin green ribbon running through it. I assumed it was mold and tossed the green parts out, but still used some of the dry, clean looking litter from that bag. One of my barred rocks is not well. I noticed it today at around noon. They were outside of the coop in the yard for only the second time in their lives. The other 11 were exloring and having fun, this one just laid down and closed its eyes. Even when one of my goat kids sniffed it, it just sat there, looking at it. I went out again this evening around 5 o'clock and it still was very lethargic. I even think its comb looks dry and droopy, but that could be my imagination. It's not eating or drinking, just laying and looking puffy and breathing slowly. I moved it out of the coop, away from the others. It's in my kitchen in a box at the moment. I haven't heard a single peep from it. It hasn't pooped since I noticed it was sick, so I dont' know what it's poop looks like. I keep saying "it" because I can't really tell the genders very well, but I think this one is a cockrel. That brings up another issue. I will probably cull all the males anyway. Do I go to great lengths to get this bird well and risk the health of the rest of my flock, or do I just cull him now. Also, should I try to figure out what's wrong with him an case it will affect the others?