Mute Swan (Cisne-mudo)

Scientific name: Cignus Olor

Parque da Cidade (Oporto – Portugal)

Cisne-mudo – Parque da Cidade

The Mute Swan (Cygnus olor) is a species of swan, and thus a member of the duck, goose and swan family Anatidae. It is native to much of Europe and Asia, and (as a rare winter visitor) the far north of Africa. It is also an introduced species in North America, Australasia and southern Africa. The name ‘mute’ derives from it being less vocal than other swan species.Measuring 125 to 170 centimetres in length, this large swan is wholly white in plumage with an orange bill bordered with black. It is recognisable by its pronounced knob atop the bill

Black Swan (Cisne-negro)

Scientific name: Cignus atratus

St James’s Park.

Cisne preto – St James’s Park (Londres).

Swans, genus Cygnus, are birds of the family Anatidae, which also includes 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 to seven species of swan in the genus Cygnus; in addition there is another species known as a swan, the Coscoroba Swan, although this species is no longer considered related to the true swans

…

O Cisne-negro (Cygnus atratus) é uma ave aquática australiana, pertencente à família Anatidae, a mesma família dos patos, gansos, e demais cisnes. É a ave oficial do estado da Austrália Ocidental. Podem-se encontrar em todos os estados da Austrália. O animal adulto pode pesar até 9 kg. Ao contrário de muitas outras aves aquáticas, os cisnes negros não têm hábitos migratórios. Passam a sua vida no local onde nasceram.