I had baby chicks and was using a plastic dish that my potato salad comes in from the store as a food dish. one of the babies stood on the rim and it flipped on top of her. She didn't survive. now I use heavier bowls that cannot flip. I use a large plastic rectangle tub to put their water in. the same thing happened to a large hen, she survived. Now I weigh it down with rocks. Recently I had a large empty gardening bucket that had contained a tree flip, upon my favorite hen Fancy Nancy. whom I did lose. I have moved all buckets from the chicken pen.