My muscovies don't roost either. My coop is set to accommodate chickens,turkeys, and ducks so lots of roosts of all sizes and heights. The silly ducks like to sleep under the storage shelves, It is kinda a cubby 2.5 ft x 2ft x 4ft long.
Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.