We have 2 ducks that fascinate my 4 yo grand-daughter. A friend suggested we give her hard-boiled eggs to feed them. It's amazing! They come right up to her for "snacks", and she can barely tear and toss the (shelled!) eggs fast enough. Further, they've learned what an egg looks like or something because when they see her, they get very interested! Anyone else have a good Duck Snack they can suggest?