I have found a beautiful picture with a pen, a cob and cygnets, right as I saw them in the Epping Forest in the afternoon.
Parents are quite territorial, usually mate for life and defend babies ferociously.
Cygnets have black bills and are covered with whitish grey or brownish fluffy down.
The number of eggs in each clutch ranges from 3 to 8, though I saw the pictures with even more cygnets.
Plumage of swan can vary between white and black, to my knowledge at least, and their beaks from red to black.
Pen with cod are devoted parents and sometimes give a ride to their babies.
Swans have webbed feet and the moment of landing on water with a bird flapping its wings is amazing really.