THE BASIC PRINCIPLES OF FERTILE SWAN EGGS

I am no expert on swans. I fairly believe an evening-time predator filched the eggs. I've read persons say that their birds( chickens, geese, whatsoever) eliminate infertile or nonviable eggs from their nest. In forty many years I haven't had a fowl eliminate their unique egg/s in the nest aside from unintentionally. This is especially true In the