This chick is 7-ish weeks old, they are outside in the coop. The weather has been in the 50's during the day and the 40's at night. She is the only chick doing this. They have all been on medicated starter since I got them (and I assume at the feed store too). She seems to be eating and drinking when I've observed her. I haven't seen any abnormal poop in the coop either.