So my ducks are almost 4 weeks old now. They have their space in the pen and take daily walks around the yard with me. We have a small pond we made ourselves (they're in it on my profile pic) that they have gotten in every few days since they were about 4 days old. But this week every time I've taken them to it they just ran in the opposite direction. There's nothing in it to hurt them and I'd like them to keep eating the algae that isn't being taken care of by the filter and clarifier. I'm going to get some crickets for them to "chase" into the water but why would they suddenly run like that?