SWAN EGGS TO HATCH THINGS TO KNOW BEFORE YOU BUY

I am no professional on swans. I instead are convinced a night-time predator filched the eggs. I have read men and women mention that their birds( chickens, geese, what ever) take away infertile or nonviable eggs from their nest. In 40 years I have not experienced a fowl take out their own egg/s within the nest apart from unintentionally. if you c