They do at least have a feed specific to waterfowl. I can't tell from that label if it's a waterfowl feed since that one has a picture of chickens on the front. That doesn't always tell you what the feed is if you get a large bag. The language looks like Dutch or Flemish. From looking at the Deli-Nature website, it looks like the one named water birds 2 is what you'd want. Is that what you're using?