We had two small wet weather springs on the farm. I had one piped to a metal bathtub that the sheep, goats and cattle drank out of. It took those 6 ducks less than 15 minutes to ruin that after they found it. The other spring, they kept dabbling in until they spread all over the pasture, an area about 30 x 30 was permanent mud hole from them constantly digging around in the grass. Then they figured out the steers got grain in the square wooden boxes in the barn yard. They would climb into the wooden boxes after the grain and pinch the steers noses until the steers stayed out while the ducks ate all the grain...... The Holstein steer finally got his fill of that and crushed one of them in the grain box. They also wouldn't bed down at night and waddled around and around the house until about 3 in the morning......... 5 female ducks can be very disturbing when they won't shut up. My porches on the house were like mine fields. I couldn't keep them in with the chickens because the drake terrorized everybody. And they would empty the waterer as fast as I could fill it up. The bedding stayed soaked. They finally committed suicide in the steers feed boxes Sorry, but, I was glad to see them go.