Do ducks sleep on the water as adults? I got a 2-3 day old runner yesterday, who insists on sleeping in the water. When I continually, over the course of the day, found her snoozing in the water dish, I added a large rock to the center of it, so they could drink properly, but not get in. I found the stubborn little thing with one foot in the dish when I checked on them last night and early this morning. So... instinct or attitude?