You definitely do a good job keeping your area clean! Do you find the ducks to be messy? We were thinking of keeping ducks alongside or instead of chickens but everyone we know who has either had ducks or known someone with ducks as well as most of the internet have warned us that they are very messy ^_; so we just stuck with chickens.

And now that we just redid the food production areas and drastically reduced the chicken area we probably don't have the space for ducks now anyway, especially as we haven't completely finished cleaning up in there and there's still a bit of junk lying around.

Other than that in the area that we're in the only other thing we're "allowed" to keep is quails which we also thought about but research suggested they're lucky to survive to breeding age with how stupid they are and that shelling the eggs might be more bother than they're worth ^_;