- Once swans scare off any other bird, they call to each other and flap their wings in celebration- like a swan high-five.
- the Queen in England owns all the Mute swans. Each year the Thames River swans are rounded up and their beaks given the mark of the queen’s brand. Sometimes the queen will give a swan as a special gift.
- Mute swans affect aquatic vegetation communities as a result of their grazing. A study in Maryland found swans eat as much as 8 pounds a day of underwater aquatic vegetation, removing habitat and food for other species more quickly than these grasses could recover.
- The main threat currently to swans is lead poisoning in ponds and lakes.
From <http://animalia.bio/mute-swan>