A group of swans is called a herd. A baby swan is called a cygnet. A female swan is called a pen. The species of swan is over 30 million years old. Swans can weigh up to 30 pounds.
Moldy bread can cause a deadly throat infection in swans .
Every 20 minutes Molly turns the eggs over. She does this to insure the embryos are evenly heated and don't stick to the shells, causing deformities in the cygnets.