Mine have always nested somewhere covered, generally in my shed or under the hay feeders. One did have a nest in a rotten tree trunk and I had to hunt her down one year. If a hen goes missing I keep my eye out. If I see her I secretly follow her, if I don't see her than a predator took her.I am planning on not letting them hatch any for awhile. Hopefully. I hear they can have hidden nests.
In all my years with muscovy none ever got away with a secret nest with me on the case. That year of 60 plus duckling because my husband said let them hatch, than the subsequent need to butcher most of them taught me a good lesson.
