We have two one gallon water stations - one in the run and the other in the coop. On occasion the one in the run has emptied throughout the day. When we re-fill they drink like they have not had water all day - when there is water in the coop. So the question will they seek out a water source. We have hopefully solved the problem with the outside running out of water. But am thinking may be we should a second water station in run to be assured that they always have water if they are not smart enough to go inside.