Just put my almost 5 week olds out in the coop last night and one of the leghorns is acting ill this morning. What with the mayhem in the old brooder it's possible I could have missed something before putting them out, but I don't think so. Her crop's not full, her vent is clear and there's no bloody poop. No access to the ground - they've been in the coop all night and I have not let any of them into the run ever yet. Water bottles are the same, feed is the same (medicated purina starter/grower). She's just sitting around all puffed up with her eyes closed but moves around when I wake her up. I tried separating her back into the brooder but she flew out and started peeping so loudly I put her back for the moment. Gave her a bit of water with Poly-vi-sol and tried to give her some scrambled egg, but she's not hungry. She IS pecking now and then at the ground. All seven of the others seem fine so far. No panting, etc. Should I get some antibiotics at TSC just in case it's something bacterial I'm missing?