Our columbian 9week old chick died, the last of the 3 we had. Again, no real symptoms the entire time. I put her on Duramycin and vitamin drops for the last 2 days too. She ate bugs yesterday when we had her out for her outside time. Then back to the garage and light at night(normally, she could have been outside-she was totally feathered-even under her wings). The ONLY symptom I could find was a little clear nasal drainage on one side. Poor thing.