A swan’s spit is full of proteins that have a water-loving end and an oil-loving end. Once in a while, the bird distributes saliva on its feathers instead of preen oil, and the oil-loving ends ...

These swans have vibrant reddish-orange bills with a horizontal white line close to the paler tips. Their irises are also a shade of red or pink. When fully grown, their length is between 3.5-4.5 ...