If you peek into a wood duck nesting box during the breeding cycle, you might find 10 to 11 eggs, which is the bird’s normal clutch size. But you might also stumble upon a box overflowing with as many as 30 eggs. How, you might ask, can one duck lay and care for so many eggs? The answer is: she can’t.
These huge piles of eggs result from intraspecific brood parasitism, otherwise known as egg dumping. This is when a bird lays eggs in a nest that does not belong to her. Waterfowl – and wood ducks in particular – often engage in this behavior. » Continue Reading.