This is from Bantychooks. Adding a hinged lid keeps ducks from swimming in the water. I think the thing I did the most was to use the hot water pour over in rubber bowls. Next was the coffee cans. Being plastic with handles, they are easy to carry, and even have lids. I brought a few down throughout the day, and the birds all drank from them. If they froze to the ground, I certainly had enough more to not care.
