Hi! I'm new to chickens, and my fiancé and I bought 5 chicks. We build a brooder, and 4 of the chicks are doing really well. The 5th (Pequito) is smaller than the other chicks and has been the lethargic the past 2 days. Today he isn't eating or drinking water and is staying close to the heater. I fed him sugar water by hand and it seemed to help a little, but there are no visible signs he's sick. No runny eyes or nose. No pasty butt. He also has a hard white dot on the end of his nose. Any suggestions/experience would be greatly appreciated.