Modifying Chicken Coop to Keep Ducks

[Nutcase]

Hi, I am giving away my 4 chickens sometime soon and I want to replace them with a few ducks. What do I need to change in my coop to suit chickens?

Coop:

Roosts
Heavy wooden frame - built into the ground
Good ventilation - chicken wire on 3 sides, solid wall on 4th side
Dirt floor (currently bedded with hay to suit chickens)
Run fenced with chicken wire
Lots of shade from native bushes
Nest box

Is this suitable for ducks (eg Khaki Campbells)? There is enough room for a kiddie pool so I'll probably put one in. Any thoughts appreciated!

First I'd like to say congrats on getting ducks they are ball of fun. Khaki's are a great breed. Here's a link to other peoples duck houses https://www.backyardchickens.com/t/55358/duck-houses. Just to help give you some ideas. If you are getting KC then you don't need roosts or nest boxes but can keep them if you want. Chances are they won't use them though. As long as there isn't a ramp they should be good. Or at least a ramp with a big angle. Also I'd add something for grip if you have a ramp leading to there house. Do you have raccoons? If so I'd replace the chicken wire with 1/4" hardwire mesh otherwise a raccoon will mostly likely get ahold of them and kill them. I find pine shavings work great with ducks but its up to you what you use and what's readily available and cost efficient for you. Ducks poop is a lot wetter than chickens so that's why I suggest shavings as they are super absorbent. But again totally up to you. Will they have excess to the run at all times? Or will they be shut in for the night?

There are virtually no predators around here so I often leave the coop open, and the chickens come out and in as they please. No there's no ramp, so they should be fine.

Thanks for the link btw!