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Cygnus

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Describes the behavior, conservation status, risk factors, and outlook for this species.
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ES: Trumpeter Swan  Trumpeters are the rarest swan in the world. They used to be abundant in North America but by the early 1900s, they were nearly extinct. Huge numbers had been shot for their down, feathers or meat. Increasing settlement disturbed suitable...
http://raysweb.net/specialplaces/pages/swan.html

Discussion by Bill Whan and Gerry Rising of the controversial program for introduction of Cygnus buccinator into the eastern US.
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Swan Controversy  The following superb portrait of a pair of Trumpeter Swans was taken by Ohio Department of Natural Resources Division of Wildlife photographer Tim Daniel Did Trumpeter Swans Ever Breed in Eastern North America We will be continually updating this file....
http://www.acsu.buffalo.edu/~insrisg/nature/swans.html

Short article on Cygnus columbianus in Britain.
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Bewick's Swan, Cygnus columbianus  Washes hold a large proportion of the 9000 or so birds that winter here. Wetland habitats, mainly shallow lakes and slow rivers near grassy meadows. Also feed in farmland on grain stubble and root crops. Smallest of the three British...
http://www.birdsofbritain.co.uk/bird-guide/bewick-swan.htm

Physical description, courtship display, and habitat of this species. Includes a photo.
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Whooper Swan, Cygnus cygnus  Also feed in farmland on grain stubble and root crops. Larger and longer-necked than Bewick's Swan, and more angular head and bill. Yellow on bill is more extensive than Bewick's 140 165cm (55 62) Whooper Swan For many years whoopers...
http://www.birdsofbritain.co.uk/bird-guide/whooper-swan.htm

Photos and tips on distinguishing this bird from the Mute Swan. Includes data on distribution in Iceland, Europe, and Asia.
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Whooper Swan (Cygnus cygnus)  They migrate south in the winter to west and central Europe, to around the Black, Aral and Caspian Seas and to China and Japan.The birds that winter in Scotland come from Iceland arriving around October and returning to Iceland during...
http://www.arthurgrosset.com/europebirds/whooperswan.html

Facts about the history, nesting, and diet of this introduced New Zealand bird.
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New Zealand Birds redirect  Please update your bookmarks. If you are not redirected after 5 seconds, please click here....
http://nzbirds.com/Muteswan.html

Photos of swans taken along the Fraser River in BC Canada.
http://www.loungeconsortium.com/geoff/swans

Provides an image, range maps, and facts about this bird's diet, habitat, and physical characteristics.
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Mute Swan (Cygnus olor)  Requires habitat with plentiful aquatic vegetation and large areas of shallow water. Photo Don DesJardin Click to enlarge Diet: Mostly aquatic vegetation and algae. Some aquatic insects and crustaceans. Identification tips for the Mute Swan Range Maps Click map to...
http://www.nenature.com/MuteSwan.htm

A private, non-profit organization dedicated to assuring the vitality and welfare of wild Trumpeter Swan populations.
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The Trumpeter Swan Society  Welcome to the only continent-wide non-profit organization dedicated to the vitality and welfare of wild Trumpeter Swans. Wintering Trumpeters on the Mississippi River, Monticello, Minnesota. Photo by Greg Gerjets, Rice, Minnesota. WHY A TRUMPETER SWAN SOCIETY? The Trumpeter Swan is...
http://www.trumpeterswansociety.org/

Photos, taxonomy, reproduction, habitat, food habits, and conservation status.
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ADW: Cygnus buccinator: Information  Trumpeter swan resides in North America, mainly in isolated populations in western Canada and the western United States. They were formerly more widespread. Biogeographic Regions: nearctic (native Habitat The Trumpeter swan inhabits lakes, ponds, large rivers, bays and sometimes grain...
http://animaldiversity.ummz.umic...formation/Cygnus_buccinator.html

Species account includes facts on geographic range, physical traits, and behavior. Provides photos.
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ADW: Cygnus olor: Information  They winter as far south as North Africa, the Near East, and to northwest India and Korea. They have been successfully introduced in North America, where they are a widespread species and permanent residents in many areas Reilly, 1968; Granlund,...
http://animaldiversity.ummz.umic...nts/information/Cygnus_olor.html