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Swans of the World. The mute swan – Cygnus olor The whooper swan – Cygnus cygnus. Distrubution. Fluffy. Rearing up. Attack!. In flight. Cygnus atratus. - PowerPoint PPT Presentation
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Swans of the World
The mute swan – Cygnus olorThe whooper swan – Cygnus cygnusDistrubution
Fluffy
Rearing up
Attack!
In flight
Cygnus atratus
