@6rant6
You don’t need a rooster for egg production, makes no dif. unless you want to raise chicks too.
The Runner ducks are cool but, the best layers of all waterfowl are the Chinese geese like my guys.
Ducks and geese also need much more forage, grass, than a chicken.
If you don’t have lawn and grazing areas available you must supplement with plenty of fresh greens, leaf lettuces, dandelion greens etc.
Fresh clean water is an imperative though, as ducks and geese, at the very least, need to be able to dunk their heads and faces to keep their eyes clean and healthy. They can be kept without swimming water but I think it is cruel. They live to swim. :-)