Hi. I have a coop with a giant run that need to keep my ducks in (they are easy target for the coyotes). My chickens can fly and are super speedy. They are used to free roaming but I have been hesitant to let them free roam since 2 of my ducks disappeared a couple of months ago. I am looking for an easy way to section off my coop so the ducks can get in from the run through the back door while my chickens who would be free roaming can come in through the front door. In other words, need to let the chickens in the coop through the front door but not the ducks out the front door. Hope this is not confusing!!! In the picture below, to the left of the ducks, you see the back door that now opens to the run. The bottom picture shows the front door that I want the chickens to go in and out of. The walled off section I'd like to create needs to be easy to gather up in case I want to clean the coop or if I decide the chickens cant go out the front door.