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Mute Swan
A pair
Conservation status
Least Concern
Scientific classification
Kingdom: Animalia Phylum: Chordata Class: Aves Order: Anseriformes Family: Anatidae Genus: Cygnus Species: C. olor
Binomial name
Cygnus olor (Gmelin, 1789)
Synonyms
Anas olor Gmelin, 1789 Cygnus olor immutabilis var. Sthenelides olor, Cygnus paloregonus, no subspecies.

The Mute Swan (Cygnus olor^[1]) is a common Eurasian member of the duck, goose and swan family Anatidae. Image File history File links Unbalanced_scales. ... Shortcut: WP:NPOVD Articles that have been linked to this page are the subject of an NPOV dispute (NPOV stands for Neutral Point Of View; see below). ... Image File history File linksMetadata Download high-resolution version (1430x1073, 855 KB) Beskrivelse Copied from the English Wiki: Source: en:Image:Swans. ... The conservation status of a species is an indicator of the likelihood of that species continuing to survive either in the present day or the future. ... Image File history File links Status_iucn3. ... Least Concern (LC) is an IUCN category assigned to extant species or lower taxa which have been evaluated but do not qualify for any other category. ... Scientific classification or biological classification is a method by which biologists group and categorize species of organisms. ... For other uses, see Animal (disambiguation). ... Typical Classes See below Chordates (phylum Chordata) are a group of animals that includes the vertebrates, together with several closely related invertebrates. ... “Aves” redirects here. ... Families Anhimidae Anseranatidae Anatidae †Dromornithidae †Presbyornithidae The order Anseriformes contains about 150 species of birds in three families: the Anhimidae (the screamers), Anseranatidae (the Magpie-goose), and the Anatidae, which includes over 140 species of waterfowl, among them the ducks, geese, and swans. ... Subfamilies Dendrocygninae Thalassorninae Anserinae Stictonettinae Plectropterinae Tadorninae Anatinae Aythyinae Merginae Oxyurinae and see text Anatidae is the biological family that includes the ducks and most duck-like waterfowl, such as geese and swan. ... Species 6-7 living, see text. ... This article does not cite any references or sources. ... Johann Friedrich Gmelin (August 8, 1748 - November 1, 1804) was a German naturalist and botanist. ... Year 1789 (MDCCLXXXIX) was a common year starting on Thursday (link will display the full calendar) of the Gregorian calendar (or a common year starting on Monday of the 11-day slower Julian calendar). ... In scientific nomenclature, synonyms are different scientific names used for a single taxon. ... Eurasia Eurasia African-Eurasian aspect of Earth Eurasia is an immense landmass covering about 54,000,000 km² (or about 10. ... Subfamilies Dendrocygninae Oxyurinae Anatinae Aythyinae Merginae Duck is the common name for a number of species in the Anatidae family of birds. ... “Geese” redirects here. ... Species 6-7 living, see text. ... Subfamilies Dendrocygninae Thalassorninae Anserinae Stictonettinae Plectropterinae Tadorninae Anatinae Aythyinae Merginae Oxyurinae and see text Anatidae is the biological family that includes the ducks and most duck-like waterfowl, such as geese and swan. ...

Distribution

This species of bird is found naturally mainly in temperate areas of Europe across western Asia, as far east as the Russian maritimes, near Sidemi (Dement'ev,G.P.(1967), Gmelin(1789) and John Latham(1824) reported Mute Swans present in Kamchatka in the 1700s and still nesting there in 2007.[Sladen and King,1976 and Heilprin,J.[Assoc.Press].(2006)] recorded Mute Swans arriving in Alaska across the Bering Strait. “Aves” redirects here. ... World map showing the location of Europe. ... World map showing the location of Asia. ... Official language(s) English[1] Spoken language(s) English 85. ...

It is migratory throughout northern latitudes in Europe and Asia, as far south as north Africa. [Dement'ev,Sibley,C.] and in the Mediterranean. It is known and recorded to have nested in Iceland [Sutton,G.M.(1962)]and is a vagrant to that area, as well as to Bermuda according to the U.N.Environmental Program chart of international status chart of bird species. Flock of Barnacle Geese during autumn migration Bird migration refers to the regular seasonal journeys of varying distances undertaken by many species of birds. ...

In America, it migrates in the Saskatchewan area,[Greenleaf 2004] across the Hudson's Bay over the Great Lakes into the States, dispersing there through mid continent [Cirianca, HillvNorton (2001)] [USFish&Wildlife,(2006)]. A specimen of Mute Swan dated 1650-1700,was designated as that species by Rufus Churcher,professor of archeology,emeritus, at University of Toronto;Howard Savage,MD,professor and curator of Archaeozoological Comparative Collection at Trent University;Donald Baldwin of Royal Ontario Museum and it appears in Birds from the Ground,a 2003 publication from Trent University,Ontario. Interior swans must often migrate to mid Atlantic coastal locations when lakes freeze over, returning to their nesting area when the lakes open. [S.Dillon Ripley,] (1965), who headed the Smithsonian for many years, wrote that "mute swans have been gracing our rivers and streams since Colonial Days," (1976). They have also been introduced into the US, sometimes as gifts from the Royal Family of Great Britain, to Lakeland, Florida, for example. The Smithsonian castle, as seen through the garden gate. ... A view of Lakelands business district, early 1920s Lakeland is a city in Polk County, Florida, United States, located approximately midway between Tampa and Orlando along Interstate 4. ...

A recent revaluation of a watercolor done by John White in 1585,while on a scientific exploration for Sir Walter Raleigh to America, reveals much earlier occupation by Cygnus olor (MuteSwan) on the Atlantic coast. Titled by the artist as simply, "The Swann," it was mislabeled in the 1960s as a "Trumpeter Swan," probably because its bill is black. However,scientists at the British Museum, holder of the collection, say that lead in the paint used by White has degraded over the four hundred years, turning some colors grey or black. The s-curved neck,the knob,the lifted rear feathers, the entire countanence could not be a trumpeter's. Further research is being done.(See: A New World, by Kim Sloan, curator of the John White collection at British Museum)

Population

Mute Swan head

The Mute Swan is one of the species to which the Agreement on the Conservation of African-Eurasian Migratory Waterbirds (AEWA) and the RAMSAR Convention of 1972 protections apply. However, numbers fluctuate, due to die-offs caused by pollution, degraded lead in water bodies,installation of towers, high wires and loss of habitat due to development. A massive die-off of waterfowl, including swans, came in 1926 when the U.S.War Department tested phosphorus bombs in Baltimore Harbor, emptying into the Chesapeake Bay. Image File history File linksMetadata Size of this preview: 800 × 533 pixelsFull resolution (4368 × 2912 pixel, file size: 3. ... Image File history File linksMetadata Size of this preview: 800 × 533 pixelsFull resolution (4368 × 2912 pixel, file size: 3. ... There are very few or no other articles that link to this one. ... The Ramsar Convention is an international treaty for the conservation and sustainable utilization of wetlands, i. ...

Often, people mistake a large number of swans seen together as indication of a rapid increase in population. What they are seeing, however is more than likely the juveniles of any given year. They meet in lakes and ponds and pair off. The total number of Mute Swans in the United States has been stable for more than fifteen years, except in some years when hurricanes or frigid weather hit and there is a die off. US Federal agency programs also are responsible for loss of Mute Swan numbers, although there is no science that would dictate such a program (Elphick,C. (2007 pers. comm.)

In 2004 a nationwide program in the United States was announced that would reduce Mute Swan populations by 85%, with the remaining swans to be pinioned, neutered and placed in parks. In Canada, no such program was developed. Concurrently,a program to "place" Trumpeter Swans to replace the Mute Swans, was formalized, in areas in which Trumpeter Swans were never shown to exist^{[citation needed]}. The public's response was very unfavorable,as shown by letters to state and federal agencies,out numbering those of hunters in favor of the action more than a hundred to one, but ignored.(U.S.Federal Register,2004) Binomial name Cygnus buccinator Richardson, 1832 The Trumpeter Swan (Cygnus buccinator) is the largest native North American swan. ...

In some places numbers of Mute Swans are increasing, for example in the United Kingdom, following a ban on the use of lead weights by anglers. In Russia the species is no longer listed in The Red Book of threatened species populations. This article is about the chemical element. ... Angling is a method of fishing, specifically the practice of catching fish by means of an angle (hook). ...

US Fish and Wildlife numbers across the fourteen American states in which Mute Swans are found indicate a significant drop in numbers,reported in USF&W Flyway Council papers for 2005.{Burton,K.(2007)This may be the result of a removal program. The Mute Swan is protected in some states by state statute, for example, in Connecticut. (Ct. State Statutes, 2007) Since they eat algae, they can be very valuable in shallow Bay areas, in rivers and ponds. They are also insectivores and will eat small insects.

Systematics

There are no recognized living subspecies of the Mute Swan.However, until the 1930s when the American Ornithological Union changed its name, it was known as Sthenelides olor,confusing some record keeping and researchers.For example, most of the work done by Hildegard Howard at the California Museum of Natural History, refers to the Mute Swan as Sthenelides olor, however her earlier work referred to Cygnus olor or simply Mute Swan in identifications. The morph immutabilis ("Poland Swan") in which the cygnets are dull white is not a subspecies as it occurs in all populations. Fossils from the Pleistocene, include "Cygnus paloregonus" From Fossil Lake Oregon, Froman's Ferry ,Idaho and Arizona, referred to by Howard in Waterfowl of the World, pg.262-265as "probably the mute type swan". paleosubspecies (Cygnus olor bergmanni)which differed only in size from the living bird and is known from fossils found in Azerbaijan. The largest mute swans are found in the Caspian Sea area, on migration [Gmelin](1789)[Latham,John](1824), even to present time. This article is about the zoological term. ... A Morph, meaning form (from the Latin morpha), is a zoological term that descibes local populations or subpopulations of a single species of animal that may or may not be phenotypically distinct from the larger population as a whole. ... The Pleistocene epoch (IPA: ) on the geologic timescale is the period from 1,808,000 to 11,550 years BP. The Pleistocene epoch had been intended to cover the worlds recent period of repeated glaciations. ... A chronospecies is a species which changes physically, morphologically, genetically, and/or behaviorally over time on an evolutionary scale such that the originating species and the species it becomes could not be classified as the same species had they existed at the same point in time. ... A fossil Ammonite Fossils are the mineralized remains of animals or plants or other traces such as footprints. ...

World population

Mute swan in natural habitat

The population of Mute Swans in Britain is around 20,000, in Holland, the same. In Russia/Siberia it has gone through many population fluctuations, due to human activities, including wars and starvation. The most recent numbers are in the hundreds of thousands, however some of these might be mistakenly called Mute Swans when they are instead the Whooper, Bewick's or Tundra Swans that are also found wild there. Image File history File linksMetadata Size of this preview: 800 × 522 pixelsFull resolution (2585 × 1688 pixel, file size: 5. ... Image File history File linksMetadata Size of this preview: 800 × 522 pixelsFull resolution (2585 × 1688 pixel, file size: 5. ... Binomial name Cygnus cygnus (Linnaeus, 1758) Whooper Swan (Cygnus cygnus) is a large Northern Hemisphere swan. ... Binomial name Cygnus bewickii (Yarrell, 1830) Synonyms Cygnus columbianus bewickii Bewicks Swan (Cygnus bewickii) is a small European swan. ... Binomial name Cygnus columbianus (Ord, 1815) The Tundra Swan (Cygnus columbianus) is a small Northern Hemisphere swan. ...

The United Nations Environmental Program lists Cygnus olor (Mute Swan) in seventy (70) countries, as breeding in 49 countries and vagrant in 16 countries around the world [UNEP-WCMC Species Data Base] (2007)While thought to have been "introduced" in Japan, recent discoveries of mute swans depicted on scrolls more than a thousand years old put that statement into question. Mute swans continue to migrate to Japan in winter, along with whooper and sometimes Bewickii swans.

For aesthetic reasons, this species is often kept in captivity, in areas where it is not native, in order to decorate parks and ponds, and escapes have happened. The descendants of such birds have become naturalised in the eastern United States and Great Lakes, much as the Canada Goose has done in Europe. The Great Lakes from space The Laurentian Great Lakes are a group of five large lakes in North America on or near the Canada-United States border. ... Binomial name Branta canadensis (Linnaeus, 1758) Canada Goose distribution, including introduced and feral populations Yellow: summer Blue: winter Green: year-round Subspecies Dusky Canada Goose Vancouver Canada Goose Lesser Canada Goose Moffitts Canada Goose Giant Canada Goose Interior Canada Goose Atlantic Canada Goose The Canada Goose (Branta canadensis) belongs...

The total number of Mute Swans in North America has never gone beyond 16,000 (U.S.Fish and Wildlife letter to Federal register (2004)), but pressures on the USFWA have caused the species to be considered pests in some areas because, potentially, they might compete with Trumpeter Swans, native birds being "placed" by the agency to create a "trophy bird." (Trumpeter Swan Society.(2006) It is suggested they compete for habitat and food, although the Trumpeter is the bigger, more aggressive bird, much more private and requires ten times the habitat area.[Johnson, J. (1978)Trumpeter Swan Society Report.]

Appearance

A Mute swan spreads its wings

Adults of this large swan range from 125-170 cm (49-67 in) long with a 200-240 cm (79-95 in) wingspan. They may stand over 1.2 m (four feet) tall on land. Males are larger than females and have a larger knob on their bill. Image File history File linksMetadata Download high resolution version (1669x1192, 857 KB) A swan spreads its wings at Slimbridge Wildfowl & Wetlands Centre, Slimbridge, Gloucestershire, England. ... Image File history File linksMetadata Download high resolution version (1669x1192, 857 KB) A swan spreads its wings at Slimbridge Wildfowl & Wetlands Centre, Slimbridge, Gloucestershire, England. ... Species 6-7 living, see text. ...

Cygnets

The Mute Swan is one of the heaviest flying birds, with males (known as "cobs") averaging at about 12kg (27 lbs), and females (known as "pens") more than 9 kg (20 lbs.). An exceptionally enormous Polish cob weighed almost 23 kg (50 lbs.), surpassing the longer-bodied Trumpeter Swan to make it the heaviest waterfowl ever recorded. Its size, orange-reddish bill and white plumage make this swan almost unmistakable at close quarters. Surveys done by air plane, however, often mistake the species, creating questionable counts. The most similar species is Whooper Swan, but that has a yellow and black bill, and lacks the curved "swan" neck, is longer and heavier and lacks the characteristic projection above the bill. Image File history File linksMetadata Size of this preview: 800 × 600 pixelsFull resolution (3456 × 2592 pixel, file size: 1. ... Image File history File linksMetadata Size of this preview: 800 × 600 pixelsFull resolution (3456 × 2592 pixel, file size: 1. ... Look up cob, COB in Wiktionary, the free dictionary. ... Binomial name Cygnus buccinator Richardson, 1832 The Trumpeter Swan (Cygnus buccinator) is the largest native North American swan. ... Binomial name Cygnus cygnus (Linnaeus, 1758) Whooper Swan (Cygnus cygnus) is a large Northern Hemisphere swan. ...

Young birds, called "cygnets", are not the bright white of mature adults, and their bill is black, not orange, for the first year. The color of the down may range from pure white to grey to a buff color. The grey/buff coloration is more widespread in cygnets around the world [Burton,K](2007). The white colored cygnets have a leucistic gene, seen most often in the north central states in America and in Poland. All mute swans are white at maturity.

Behaviour

Mute swan with cygnets, unafraid of nearby boats

Mute Swans nest on large mounds that they build in shallow water in the middle or at the edge of a lake. These monogamous birds reuse the same nest each year, restoring or rebuilding it as needed. Male and female swans share the care of the nest, and once the cygnets are fledged it is not uncommon to see whole families looking for food. They feed on submerged aquatic vegetation, reached with their long necks. This bird can often be found in colonies of over 100 individuals such as at the southern tip of Öland Island, Ottenby Preserve, in the coastal waters of the Baltic Sea (Hogan, 2006). These large groups are generally non-mated juveniles.(Scott,P) Once the adults are mated they seek out their own territories and often live close to ducks and gulls, who take advantage of the swans ability to reach weeds, which tend to spread out on the water surface. Image File history File links Metadata Size of this preview: 800 × 363 pixelsFull resolution (1077 × 489 pixel, file size: 277 KB, MIME type: image/jpeg) File history Legend: (cur) = this is the current file, (del) = delete this old version, (rev) = revert to this old version. ... Image File history File links Metadata Size of this preview: 800 × 363 pixelsFull resolution (1077 × 489 pixel, file size: 277 KB, MIME type: image/jpeg) File history Legend: (cur) = this is the current file, (del) = delete this old version, (rev) = revert to this old version. ... For the Finnish island, see Ã…land. ... Ottenby is a nature reserve at the southern tip of the island of Öland in Sweden. ... The Baltic Sea is located in Northern Europe, from 53°N to 66°N latitude and from 20°E to 26°E longitude. ...

Although this bird can be tame, especially to those who feed it daily, it is aggressive in defence of its nest, and its size and impressive hissing make it a formidable adversary for animals as large as a fox. Large waterfowl, such as Canada Geese may be driven off, and there have been many reports of Mute Swans attacking people who enter their territory. The male (Cob) is also responsible for defending the cygnets while on the water, and will sometimes attack small watercraft, such as jet skis or canoes, that it feels are a threat to its young. This article needs additional references or sources for verification. ... Binomial name Branta canadensis (Linnaeus, 1758) Canada Goose distribution, including introduced and feral populations Yellow: summer Blue: winter Green: year-round Subspecies Dusky Canada Goose Vancouver Canada Goose Lesser Canada Goose Moffitts Canada Goose Giant Canada Goose Interior Canada Goose Atlantic Canada Goose The Canada Goose (Branta canadensis) belongs...

The Mute Swan is less vocal than the noisy Whooper and Bewick's Swans; the most familiar sound associated with Mute Swan is the whooshing of the wings in flight once this bird has laboriously taken off from the water. The phrase swan song refers to this swan and to the legend that it is utterly silent until the last moment of its life, and then sings one achingly beautiful song just before dying; in reality, the Mute Swan is not completely silent, but has a kind of guttural warning call it will give when approached. A swan song is a reference to an ancient and false belief that the occasional Mute Swan (Cygnus olor) is completely mute during its lifespan, but may sing one heartbreakingly beautiful song just before it dies. ...

Unlike Black Swans, Mute Swans are strongly territorial. The familiar pose with neck curved back and wings half raised, known as busking, is a male threat display. The Mute Swan is protected in most of its range, but this has not prevented illegal hunting and poaching in some countries. Binomial name Cygnus atratus Latham, 1790 Subspecies Black Swan New Zealand Swan (extinct) Synonyms Anas atrata Latham, 1790 Chenopis atratus The Black Swan, Cygnus atratus is a large non-migratory waterbird which breeds mainly in the southeast and southwest of Australia. ... For other uses, see Poaching (disambiguation). ...

In culture

A Mute swan at the moment of landing

• A Mute Swan was shown on the official Euro during 2005 when the Union was headed by the President of Ireland.
• Socrates' last words before being put to death in 399 AD: "You think I cannot see as far ahead as a swan. You know that when swans feel the approach of death they sing, and they sing sweeter and louder on the last days of their lives because they are going back to that God whom they serve." (Plato)
• The Mute Swan is the national bird of the Kingdom of Denmark.
• All Mute Swans in the UK (with the possible exception of those in Orkney and Shetland) are considered the property of the British monarch, except for flocks owned by the Vintners' and Dyers' Companies. See Swan Upping.
• The Mute Swans in the moat at the Bishops Palace at Wells Cathedral in Wells, England have for centuries been trained to ring bells via strings attached to them to beg for food. Two Swans are still able to ring for lunch. Bell Ringing Swans Of Wells, England Official Website
• There is rich iconographic and literary evidence for Celtic bird-goddesses who took the form of swans. Similarly, swans are highly revered in Hinduism (see the culture section of swan). The Roman Julius Caesar noted that the British tribes thought wild geese and swans "unlawful" to eat or kill. By medieval times, though, swans were considered an edible form of poultry. Nowadays they are a protected species in many countries.
• Both the Ancient Britons and the Anglo-Saxons believed that a swan's wings throbbed and sang with a human voice when they flew.

Image File history File links Download high-resolution version (952x705, 202 KB) Mute Swan touchdown at Slimbridge Wildfowl and Wetlands Centre, Slimbridge, Gloucestershire, England. ... Image File history File links Download high-resolution version (952x705, 202 KB) Mute Swan touchdown at Slimbridge Wildfowl and Wetlands Centre, Slimbridge, Gloucestershire, England. ... “EUR” redirects here. ... -1... This page is about the ancient Greek philosopher. ... Events Yazdegerd I becomes king of Persia November 27 - St. ... PLATO was one of the first generalized Computer assisted instruction systems, originally built by the University of Illinois (U of I) and later taken over by Control Data Corporation (CDC), who provided the machines it ran on. ... For the comic series, see Monarchy (comics). ... Location Geography Area Ranked 16th  - Total 990 km²  - % Water  ? Admin HQ Kirkwall ISO 3166-2 GB-ORK ONS code 00RA Demographics Population Ranked 32nd  - Total (2005) 19,590  - Density 20 / km² Scottish Gaelic  - Total () {{{Scottish council Gaelic Speakers}}} Politics Orkney Islands Council http://www. ... Location Geography Area Ranked 12th  - Total 1,466 km²  - % Water  ? Admin HQ Lerwick ISO 3166-2 GB-ZET ONS code 00RD Demographics Population Ranked 31st  - Total (2005) 22,000  - Density 15 / km² Scottish Gaelic  - Total () {{{Scottish council Gaelic Speakers}}} Politics Shetland Islands Council http://www. ... The British monarch or Sovereign is the monarch and head of state of the United Kingdom and its overseas territories, and is the source of all executive, judicial and (as the Queen-in-Parliament) legislative power. ... The Worshipful Company of Vintners is one of the Livery Companies of the City of London. ... The Worshipful Company of Dyers is one of the Livery Companies of the City of London. ... Swan Upping is an annual ceremonial and practical activity in England in which mute swans on the River Thames are rounded up, caught, marked, and then released. ... The moated manor house of Baddesley Clinton in Warwickshire, England Moats (also known as a Fosse) were deep and wide water-filled trenches, excavated to provide a barrier against attack upon castle ramparts or other fortifications. ... The west front, completed c. ... Wells is a small cathedral city and civil parish in the Mendip district of Somerset, England, nestling in the Mendip Hills. ... Motto (French) God and my right Anthem No official anthem specific to England — the United Kingdom anthem is God Save the Queen. ... A bell is a simple sound-making device. ... Species 6-7 living, see text. ... Gaius Julius Caesar [1] (Latin pronunciation ; English pronunciation ; July 12 or July 13, 100 BC or 102 BC – March 15, 44 BC), was a Roman military and political leader and one of the most influential men in world history. ... This article does not cite any references or sources. ... The term Briton may have the following meanings: in a historical context: an inhabitant of Great Britain in pre-Roman times a descendant of Britons during a later period (e. ... The famous parade helmet found at Sutton Hoo, probably belonging toRaedwald of East Anglia circa 625. ...

Footnotes

1. ^ Both Cygnus and Olor mean "swan", in Ancient Greek and Latin, respectively.

Note: This article contains special characters. ... Latin is an ancient Indo-European language originally spoken in Latium, the region immediately surrounding Rome. ...

References

• Allin, C. C., & Husband, T. P. (2003). Mute swan (Cygnus olor) impact on submerged aquatic vegetation and macroinvertebrates in a Rhode Island coastal pond. Northeastern Naturalist, 10, 305-318.
• Burton,K.(2007) [Mute Swans may have Russian, not English accents] Ezine
• Elphick,C.(2007) Evaluation of mute swans to access potential problems,Univ.of CT
• Heilprin, J.=Associated Press article (1/23/2007)mute swans."majestic swans flying across the Bering Strait into Alaska." Photo shows mute swans,up close.
• BirdLife International (2004). Cygnus olor. 2006 IUCN Red List of Threatened Species. IUCN 2006. Retrieved on 09 May 2006. Database entry includes justification for why this species is of least concern
• Cirianca,(2001) Hill v, Norton, Federal Court of Appeals, Washington, D.C.
• Hogan, C. M. (2006). Environmental Database for Oland, Sweden. Lumina Press. 
• Connecticut State Statutes, 2005. Protection of the Mute Swan species.
• Dement'ev,G.P.,Gladkov,N.A.(1967) USF&W translation=Birds of the Soviet Union, Vol.IV
• Madge, S. and Burn, H. (1987). Wildfowl: An Identification Guide to the
• Ducks,Geese and Swans of the World. A & C Black. ISBN 0-7470-2201-1. 
• Jefferson,G.T.(2005) "Fossil Treasures of the Anza-Borrego Desert=(fossils pg 153)"
• Latham,John,MD.(1824) General History of Birds.220-223.
• Library of Congress.(1926). Removal of Phosphorous in Chesapeake Bay Where Ducks Feed
• Parrott, D., & McKay, H. V. (2001). Mute swan grazing on winter crops: Estimation of yield loss in oilseed rape and wheat. Crop Protection, 20, 913-919.
• Pennant,Thomas.(1792) Arctic Zoology, Vol.II,Class II,Printed for Rbt Faulder, London. 262-265.
• Scott,P. and the Wildfowl Trust,(1972) behavioral patterns of juvenile mute swans."The Swans."
• Ticehurst, N. E. (1957). The mute swan in England. London: Cleaver-Hume Press.
• USFish&Wildlife Flyway Reports for the year 2005. Population numbers on the mute swan species
• Wilmore,S.B.(1979) Swans of the World" fossils 29-35mute swan 44-75

The IUCN Red List of Threatened Species (also known as the IUCN Red List and Red Data List), created in 1963, is the worlds most comprehensive inventory of the global conservation status of plant and animal species and can be found here. ... The World Conservation Union or International Union for the Conservation of Nature and Natural Resources (IUCN) is an international organization dedicated to natural resource conservation. ...

External links

Wikimedia Commons has media related to:

Cygnus olor

• ARKive - images and movies of the mute swan (Cygnus olor)

• The Bell Ringing Mute Swans Of Wells
• Cathedral Swan Pool - image from the Postcard Collection at www.somerset.gov.uk
• Swan Ringing a Bell - image from the Postcard Collection at www.somerset.gov.uk
• Swans Ring Bells - image from the Postcard Collection at www.somerset.gov.uk
• The Mute Swan - written by Sylvia Roff-Marsh and hosted at tintota.com
• RSPB Mute Swan Page
• Mute Swan Information and Photos - South Dakota Birds and Birding
• Mute Swan - Cornell Lab of Ornithology
• Mute Swan videos on the Internet Bird Collection
• Massachusetts Breeding Bird Atlas
• Wolseley Wildlife Videos of Mute Swans and their newly hatched Cygnets