Why Is One Mallard Egg Out Of The Nest?A mallard laid 10 eggs in my yard. She has been sitting on them for almost a month, leaving a short period of time in the morning and again early evening. This morning, 1 of the eggs was approximately 6 feet away from the nest. We have Muscovy ducks in the neighborhood that frequent our yard, including mother, father, and 3 ducklings.