Swan, a bird that symbolizes loyalty

Swans are large Anseriformes birds in the genus Cygnus , family Anatidae . Geese and soang belong to the subfamily Anserinae , but geese have their own tribe, namely the Cygnini tribe . There are seven species in the genus Cygnus . Geese are monogamous animals , "divorce" sometimes occurs if the nesting process fails. The swan is the largest member of the Anatidae family, and is one of the largest flying water birds. The largest species of swan, namely the white goose , trumpeter swan , and whooper swan can reach a length of 60 inches and weigh 50 pounds . Their wingspan can reach three meters in length. Compared to its relative ( soang ), the goose is larger in size and has proportionally larger feet and neck. In geese, they have markings in the form of unfeathered skin between the eyes and beak. Male and female geese do not show dimorphism . Male geese are generally larger and heavier.