How important is it for a ducks to have a solid pond to use? I ask because until yesterday the info I came across was essentially that a kiddie pool is good enough for a few ducks. But I came across a video in which the person was talking about mistakes they made with ducks. They mentioned that even for a few ducks they really need enough water space, to dive some and really spend sufficient time in water. What has been your experience? And do you have any idea of a measure need per duck? Thank you