I've been raising a few ducks for 3 or 4 years (diferent birds every year.) They free range plus I feed them duck food. I have seen them eat snails and frogs several times, but yesterday they totally grossed me out by eating a fledgling bird, probably a sparrow or tit. They were really quite manic about it, and a huge compitition arose for a taste. (I have 5 ducks that are about 3 months old.) The irony of the whole thing is at the time I was helping a neighbor girl with a fledlging sparrow that she was nursing back to health after an encounter with a cat. Has anyone else ever witnessed the same thing?