Hi , I have aquired 2 ducklings, I am told they are Aylesbury breed. They "peep" at the moment no quacking. They are all yellow with very downy feather, their beaks are a very pale pink/yellow. I have decided they are too young to keep outside so are in my kitchen at the moment, they paddle in the bath twice a day, munch on layers pellets and have plenty of water. When should I expect to see their adult feathers come through?? How old would you say they are??? Their bodies are approx the size of an average size ladies palm. Also should they be on a special diet as they are growing???