The cygnets can fly at an age of 120 to 150 days.
Young birds, called cygnets, are not the bright white of mature adults, and their bill is dull greyish-black, not orange, for the first year.
Male swans have been known to display aggressive behavior in order to protect their families, but such behavior generally decreases as the cygnet grows older.
The group of two birds, presumably an adult pair, can be identified as corvids, perhaps ravens, the family of five as swans and cygnets.
Also, unlike most wildfowl, both parents regularly carry the cygnets on their backs.
Today, only swans with cygnets are caught and ringed.
Visitors are sometimes allowed to hold the cygnets under supervision from the swanherds.
The cygnets (juveniles) are grey in appearance, becoming white after the first year.
