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

I am no pro on swans. I fairly think that a night-time predator filched the eggs. I've read people today mention that their birds( chickens, geese, whatever) take out infertile or nonviable eggs from their nest. In forty years I have not experienced a bird eliminate their unique egg/s in the nest other than unintentionally. As Earlier stated, the