swan swimming salisbury

navigate by keyword : anatidae anserinae birds closest clutch coscoroba cygninae cygnini cygnus dies divorce each eggs eight extinct failure following for geese genus grouped kingdom life living market mate nesting number particularly ranges relatives remaining salisbury six species subfamily swan swans three tribe true united usually walk wiltshire within

Beautiful Swan over the flooded waters of the Avon River in Salisbury city Royalty Free Stock Photo

Woman sitting on a bench looking at the Avon River Flooding Royalty Free Stock Photo

Swans are birds of the family Anatidae within the genus Cygnus.[3] The swans` closest relatives include the geese and ducks. Swans are grouped with the closely related geese in the subfamily Anserinae where they form the tribe Cygnini. Sometimes, they are considered a distinct subfamily, Cygninae. There are six living and many extinct species of swan; in addition, there is a species known as the coscoroba swan which is no longer considered one of the true swans. Swans usually mate for life, although divorce sometimes occurs, particularly following nesting failure, and if a mate dies, the remaining swan will take up with another. The number of eggs in each clutch ranges from three to eight