NOT KNOWN FACTUAL STATEMENTS ABOUT FERTILE SWAN EGGS FOR SALE

I'm no pro on swans. I somewhat think that an evening-time predator filched the eggs. I've read people today mention that their birds( chickens, geese, regardless of what) clear away infertile or nonviable eggs from their fertile swan eggs for sale nest. In 40 a long time I haven't experienced a hen clear away their own egg/s with the nest aside fr