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- Swan - Wikipedia
The biggest species of swan ever was the extinct Cygnus falconeri, a flightless giant swan known from fossils found on the Mediterranean islands of Malta and Sicily Its disappearance is thought to have resulted from extreme climate fluctuations or the arrival of superior predators and competitors
- Swan facts | Birds | BBC Earth
The mute swan, whooper swan, trumpeter swan, and tundra swans (Bewick’s swan and the whistling swan) are native to the northern hemisphere The black swan, black-necked swan and coscoroba swan are native to the southern hemisphere 33 All swans have all-white plumage, except the black and black-necked swans Beak colours can vary from yellow
- SWAN中文(繁体)翻译：剑桥词典 - Cambridge Dictionary
swan翻译：天鵝, 漫遊，遊走，閒逛，悠閒地走動。了解更多。
- Swan | Bird Species, Migration Lifespan | Britannica
swan, largest waterfowl species of the subfamily Anserinae, family Anatidae (order Anseriformes) Most swans are classified in the genus Cygnus Swans are gracefully long-necked, heavy-bodied, big-footed birds that glide majestically when swimming and fly with slow wingbeats and with necks outstretched
- Swan Bird Facts - Cygnus atratus - A-Z Animals
The Swan is known around the world for its beauty, elegance, and grace The swan is a genus of waterfowl that has the ability to swim and fly with incredible speed and agility This bird is also very intelligent, devoted to its mate, and highly aggressive about defending its young
- Swan - Description, Habitat, Image, Diet, and Interesting Facts
The Swan is a large waterfowl in the Anatidae family These birds are generally quite large, with long curved necks They share a family with the smaller ducks and geese, though they are more closely related to geese than they are to ducks
- 7 Swan Species Swan Types (How to Identify) - Pond Informer
Guide to swan species and the types of swan found in the US, UK, Canada, Europe Worldwide Facts about swans and how to identify the different swan types
- Swans: Facts, Threats, Habitat, and FAQs | IFAW
Did you know there are six species of swan? Discover incredible swan facts and find out what IFAW is doing to protect swans around the world
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