My two ducklings are getting to big for their container. I guess they are more like juveniles than babies. They arent feathered yet but they are starting to turn white and they are pretty big and they are very antsy and want to be out more. they are going to go into a 12x12 stall in a barn so they wont be out in the open. The highs are in the 90's will this be too hot? Also should i be worried about owls attacking them? Has anyone had this problem before?