A SECRET WEAPON FOR SWAN EGGS TO HATCH

I am no professional on swans. I alternatively believe a night-time predator filched the eggs. I've listened to people today express that their birds( chickens, geese, whatever) get rid of infertile or nonviable eggs from their nest. In 40 many years I haven't had a chicken take out their own individual egg/s in the nest in addition to unintentiona