Hi all! I'm no stranger to raising animals however this is my first time raising silkies and I need any advice I can get please! I purchased 4 silkie chicks from a local farmer here in Pennsylvania on April 14. All seemed to do great the first week but then one of them got very lethargic this past weekend and died on Monday morning. It was eating and drinking normally but not nearly as active as the other chicks. Chic seemed to sleep alot and was very disoriented and would fall over. It happened so fast! Now, one of my other chicks is starting to look lethargic as well. Still eating and drinking fine but not nearly as active or playful as the other two. He seems to be sleeping more too. I have them in a three-by-three tub, on pine chips that I chabge every few days. I have them on the chick starter crumbles. And give them fresh water three to four times a day. Have red bulb heat lamp on them and keep the temp at 92. Is there anything I'm doing wrong that I need to change? Should I separate the one that seems to be somewhat lethargic from the other two? Thanks in advance for any advice!