INDICATORS ON SWANS EGGS INCUBATION TIME YOU SHOULD KNOW

I'm no expert on swans. I somewhat feel that a night-time predator filched the eggs. I have listened to individuals express that their swan eggs for sale hatching birds( chickens, geese, regardless of what) eliminate infertile or nonviable eggs from their nest. In forty several years I have never had a bird eliminate their very own egg/s within the