Since yesterday my baby silkie (about 5-6 weeks old) seems to have its eyes not as open as normal. Everything else seems to be fine. Shes eatting ok and drinking fine. I have her inside in a three tiered mouse cage and have had her in there about a week and a half. The bottom is lined with pine shavings which I keep clean. Everything seems just normal. She doesnt seem in pain or lethargic. Just her eyes arent as open as they were before. Any ideas on what is wrong with her?