cygnus olor การใช้

They are Cygnus olor, a breed native to Europe and Asia, with shorter necks.
The Brayford Pool is known for its large population of mute swans ( " Cygnus olor " ).
The painting's subject is a life-size swan ( " Cygnus olor " ) defending its nest against a dog.
Paul Johnsgard, in 2010, has stated that mute swan ( Cygnus Olor ) do migrate to northwestern Himalayan region of India every winter, migrating some 1000 miles each way.
"Zostera noltii " plays an important part in the winter diet of the whooper swan ( " Cygnus cygnus " ), the mute swan ( " Cygnus olor " ), the brent goose ( " Branta bernicla " ) and the wigeon ( " Anas penelope " ) and in fact, overwinting populations of brent goose in Europe have declined since wasting disease has become established and reduced the quantity of eel grass available.