THE SMART TRICK OF FERTILE SWAN EGGS THAT NO ONE IS DISCUSSING

I'm no qualified on swans. I relatively believe that an evening-time predator filched the eggs. I've heard people mention that their birds( chickens, geese, no matter what) clear away infertile or nonviable eggs from their nest. In forty years I have not had a hen eliminate their particular egg/s within the nest other than unintentionally. Togethe