First time duckling owner here and I have 15 that are now 14 days old. They are freaks of nature, I swear - I've never seen anything grow so fast! I have them in a 30"x60" wire cage (wire floor) and bed down one side each evening with fresh hay for them to lay on. It turns into a poopy mess so that gets changed every day. No big deal there. But water? How can they possibly empty two full one-gallon waterers over night? It's been bone dry the last few mornings. And bone dry again my mid-afternoon. I'm going away for the weekend and my help is only able to come in the evening. I also work full time so I can't be down there for a mid-day fillup. Could I let them out in a big pen (it's about 12'x24') but they'd be with 2 older ducks and about a dozen pullets? I did let them out for a bit yesterday and the two older ducks kept biting them! How do I keep up with their water needs while also keeping them safe ?