Male and female mallard ducks
We have a male and female Mallard duck that visit our pool every April. Our Labradore is infatuated with them, but doesn't bother them at all, and they ignore him. This year however, the female spends most of the day here alone. The male joins her later in day and only for a short time. Last year they spent most of the day together. Can you shed any light on this. Thank you.