Can you tell me why you would? or why you might have both? First it may help to know my situation. I had 6 chickens before. Now I'm looking to start over. I want egg layers. I live in the 'burbs. My chickens free ranged in my backyard. I have two small children almost 4 and almost 2. My fenced in yard is about 240 sq ft. I live in Denver, CO. Dry and somewhat mild., although we do have snow (sometimes lots of it) it usually melts fairly quickly. We don't get much rain. I have a garden that's about 16 sq ft. Pros for ducks (We're thinking khaki campbells: eat ants and slugs without terrorizing garden (I think) friendlier (I think) no permit needed within the city limits better foragers (I think) Cons: messier eat more feed I don't know about eggs after the first year happier with water to play in I tried looking through old threads but couldn't find what I was looking for. Thanks for the advice. ETA: I feel like I have a good base knowledge for chickens now. I'm considering ducks more as a curiousity. But I don't want to feel overwhelmed.