I am looking for suggestions to build a secure duck coop with access to our pond. I have been thinking of building them a house to secure them at night with a run that goes out into the water for daytime access to the pond and pasture/woods. We plan to lock them up in the duck house at night but during the day let them out to free range. They would be able to get out in the pond if a predator is after them in the daytime. Any suggestions are welcome.