I bought a Silkie and a Frizzled Cochin on Monday. Tonight when I went to bed about 12:30 I noticed they weren't cherping, I went and looked and my little Maisey had died. She was still warm. Maisey is a Frizzled Cochin. Now my concern is her sister. I am not sure if Maisey died of something that can spread to Marabou or not or if by chance the shavings I had them in caused it. They were old and when I went to changed the cage tonight (after her death), they smell moldy (the new bedding out of the old bag, not the first bedding for them). I cleaned everything again, went out and bought a new bag of shavings for Marabou. But now my son says everytime Marabou closes her eyes she opens her mouth to take breaths. We had a baby robin start out doing this and then all the sudden died too. My son played with the chicks about 5 or so this afternoon and both were fine. I looked briefly in on them after that and both were fine. any idea what happen? And what should I watch for now with Marabou? I will go back to the breeder and get another, not sure if these are like ducks, but ducks need companions asap or they give up sometimes and just do not thrive. I did notice that Maisey and Marabou were both extremely thin, but it has been years since I had a baby chick and cannot remember, but my ducks weren't that thin at that age. Marabou since Monday has picked up weight (you cannot feel her breast bone as much now), but Maisey was still on the then side. Please let me know what you think. Oh, Marabou is supposed to be about 3 months old, I think Maisey was maybe 4 weeks.