I am new to ducks and I have someone coming over to fix me a pen for my ducklings. I don't know what to ask for or what I need.Can some of you share your duck pens and houses? What do I need to think about as far as keeping who seperated as they are older and when they lay eggs? Any ideas on pool and how to clean it the easiest way? I live in Tennessee so any thoughts for the winter? what about food and water area? Sorry for all the questions I just want to do the right things and make sure we are all happy in the end.