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Science, Biology, Flora and Fauna, Animalia, Chordata, Aves, Anseriformes, Anatidae, Cygnus

http://www.birdsofbritain.co.uk/bird-guide/bewick-swan.htm

» Bewick's Swan - Short article on Cygnus columbianus in Britain.

http://animaldiversity.ummz.umich.edu/site/accounts/information/Cygnus_buccinator.html

» Cygnus buccinator (Trumpeter Swan) - Photos, taxonomy, reproduction, habitat, food habits, and conservation status.

http://animaldiversity.ummz.umich.edu/site/accounts/information/Cygnus_olor.html

» Cygnus olor (Mute Swan) - Species account includes facts on geographic range, physical traits, and behavior. Provides photos.

http://www.acsu.buffalo.edu/~insrisg/nature/swans.html

» Did Trumpeter Swans Ever Breed in Eastern North America? - Discussion by Bill Whan and Gerry Rising of the controversial program for introduction of Cygnus buccinator into the eastern US.

» Mute Swan (Cygnus olor) - Provides an image, range maps, and facts about this bird's diet, habitat, and physical characteristics.

» Mute Swan (Cygnus olor) - Facts about the history, nesting, and diet of this introduced New Zealand bird.

http://raysweb.net/specialplaces/pages/swan.html

» Trumpeter Swan (Olor buccinator) - Describes the behavior, conservation status, risk factors, and outlook for this species.

» The Trumpeter Swan Society - A private, non-profit organization dedicated to assuring the vitality and welfare of wild Trumpeter Swan populations.

http://www.birdsofbritain.co.uk/bird-guide/whooper-swan.htm

» Whooper Swan (Cygnus cygnus) - Physical description, courtship display, and habitat of this species. Includes a photo.

http://www.arthurgrosset.com/europebirds/whooperswan.html

» Whooper Swan (Cygnus cygnus) - Photos and tips on distinguishing this bird from the Mute Swan. Includes data on distribution in Iceland, Europe, and Asia.

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