I keep my ducks and chickens together (they all have to be penned up due to predator problems!). I'm having problems with the ducks not laying. I have female Khaki Campbells and Welsh Harlequin so they should be laying eggs! I bought my Khakis last summer at 7 weeks old. They didn't start laying until 7 1/2 months of age, in the middle of winter. They would lay every day while there was snow on the ground, and not a single egg when the weather was dry. Since we last got a significant amount of snow a few months ago, they have not laid a single egg! I added the older Welsh Harlequin to my flock about a month ago. She didn't lay for the first week, then laid seven days in a row, then stopped completely and not a single egg since. There is nowhere they could be hiding the eggs, I even used a flashlight to check under the coop, which is blocked off anyway. They have a small makeshift pond they all swim in. Everyone seems to get along. I am feeding a local mix of ground field peas, wheat and barley that is soaked overnight before feeding. They also get a wide variety of weeds, garden and kitchen scraps, and free choice oyster shell, and a handful of flax seeds each day. I tried adding nutritional yeast to their feed for a while just for the ducks, but still no duck eggs! These girls have me stumped. Any ideas?