I have 3, 10 week old ducks that are having a difficult time surviving in the hot Georgia weather. I've had as many as 3 different swimming pools available to them at a given time, and they won't get in them. They will however, try to swim in their water bowl! How do I help them move up to something larger than their water bowl? They get very nervous and run from us and the pools. Would they do better in a pond? How old would they need to be to take care of themselves? Thanks for all your help!