Keeping ducks and chickens together.

I have mine sleep together. tiny flock... it's down to 5 since my duck got eggbound and died, but the drake still sleeps with the chickens. they roost, he's on the floor. no food or water inside the house, and I made bucket feeders with PVC elbows so they are outside. We have buckets to drink from, and the duck has a small rectangle 'splash pad' (roughly the size of one of those dish-bussing bins, but it came from a hardware store). This way he can bathe and take care of bugs, have veggies in his water, etc and not make a huge mess for everyone else. My pen is 200 linear feet of fencing, and I move it every couple of months. I use deep bedding & intend to let it compost in the house, so i just stir it every few weeks with a pitchfork to make up for what the chickens don't scratch through. I just set some more duck eggs in hopes of getting a new duckling!! I have enough chickens for now. The drake likes to perch on a 2x4 by the big window in the coop and keep watch. He's a good guard duck, and helps the rooster with watch duties!