I had ducks in the suburbs before we moved. Let me ammend that. I had ducks illegally in the suburbs. I started with 5 hens. Then I really wanted to get ducklings. I got Runners. Loud. For the suburbs. I never heard my neighbors comment about the chickens but the ducks, I'd hear them talking over the fence. I eventually got Muscovy, partly due to noise, partly because I wanted a meat bird.
Most of my neighbors knew that I had birds and didn't care. The comments I heard were from new neighbors. Since my ducks were illegal (and are almost everywhere in the suburbs because they are considered livestock), I knew I would have no recourse if I was reported.
My duck run was 15'x20' and included a covered windbreak (I was living in FL so no real cold) and I let them out into the yard during the day. My ducks were happy but I had to set things up in the yard so that they would not have a long take off ramp. They would start running and flapping across the yard trying to get air. I lay down a 10' ladder to break up their path. The muscovy loved to roost on it.
Looking back on it now that I have birds with much more room I don't know if I'd do it again in the suburbs. My chickens had basically turned my backyard into a sand pit, no vegetation below 2'. The ducks were great at catching flies and I'd provide fresh greens and veggies. But there is nothing like being able to watch your birds roaming about and swimming in the creek.