I have a Mallard that started laying a while back. I do not have a Mallard drake but I do have Call and Muscovy drakes. I have seen her mating with both. She has now gone broody. The eggs are viable and developing. Has anyone out there incubated Mallard/muscovy hybrid eggs and know the incubation period? Mallards are 28 and Muscovy are 35, so if the eggs are a hybrid I'm guessing the hatch time would be somewhere between 28 nd 35 days. I am hoping the ducklings will be Call/Mallards. I also assume my Mallards are a cross breed since this is not when Mallards would breed.