I have what appears to be a young muscovy duckling. I have never had a muscovy before. It is just starting to grow its wings in. Is it too young yet to put in with my fully grown ducks? I ask because my son put it in with them a few days ago and now it is acting lethargic and weak. I have put the duckling in its own pen with food and water (it is eating). Is there anything else I should do for this poor duckling? Or is there something I should be looking for that could be wrong with it? Please help... My son would be devostated if anything happened to his duckling, especially if it was because he put it in with the big ones too soon..