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Cygnus olor

(domestic swan)

Overview

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Interesting Facts

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Common Names

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Click on the language to view common names.

Common Names in Dutch:

Knobbelzwaan

Common Names in English:

common swan, domestic swan, Mute Swan, royal swan, swan, tame swan, wild swan

Common Names in French:

Cygne muet, Cygne tuberculé, Cygne Tuburcul, cygne tuburculé, cygne tuburculé

Common Names in German:

Höckerschwan

Common Names in Hebrew:

ברבור מצוי

Common Names in Italian:

Cigno reale

Common Names in Japanese:

コブハクチョウ

Common Names in Russian:

Lebed-shipun, Лебедь шипун, Лебедь-шипун

Common Names in Spanish:

Cisne vulgar

Common Names in Swedish:

Knölsvan

Description

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Physical Description

Adult : Face : Lores : black Bill: orange Shape : large black basal knob Neck: white Length : long.

Habitat

Typically found in a lake at a mean distance from sea level of 286 meters (938 feet).[1]

Ecology: Behaviour Truly wild populations of this species are migratory (particularly where displaced by cold weather)1, 6 although European and feral populations are essentially sedentary1, 4, 5, 6 or only locally migratory or nomadic5, 6. The species breeds during the local spring1, 2 as isolated pairs in well-defended territories1. After breeding the adults may gather in large concentrations of thousands or more3, 4 on selected waters3 (non-breeders in northern Europe migrating to such gatherings6) between July and August5 to undergo a flightless moulting period lasting for 6-8 weeks2. Although not noticeably sociable in many areas during the winter4 the species may flock in groups of several thousands on favoured waters3, 4, 5. Habitat The species inhabits a variety of lowland freshwater wetlands1 such as shallow lakes2, ponds3, lagoons , marshes1, reedbeds1, 6 and slow-flowing rivers2 (showing a preference for clean, weed-filled streams over larger, polluted rivers )4. It is also common on artificial waterbodies such as reservoirs , gravel-pits, ornamental lakes1, ditches6 and canals5, and will graze on grassland and agricultural land (e.g. arable cereal fields )2. Moulting congregations of adults and non-breeders6 may also utilise brackish or saline habitats4 including brackish marshes2, estuaries and sheltered coastal sites1 (e.g. brackish lagoons2 and bays3). Diet Its diet consists predominantly of leaves and the vegetative parts of aquatic plants1, 4 and grasses1 as well as algae4 and grain1, occasionally also taking small amphibians1, 4 (frogs , toads and tadpoles )6 and aquatic invertebrates (e.g. molluscs , insects and worms)1, 4. Breeding site The nest is a large mound of aquatic vegetation1, 2 placed close to or floating on shallow water1, 2 or amongst reeds1. Breeding pairs often re-use nesting sites from previous years if the it was successful4. Management information The cyclical removal of adult fish from an artificial waterbody (gravel pit ) in the UK resulted in an increase in the growth of submerged aquatic macrophytes and in turn led to an increase in the winter use of the habitat by the species8. The removed fish (dead or alive) were sold to generate funds8. A control of the breeding output of the species (brood reduction) carried out in the Wylye Valley, UK to try to alleviate the species's negative impacts on fisheries (e.g. by overgrazing submergent riverine vegetation) was found to be ineffective as it had an insignificant impact on local population sizes (possibly due to immigration from surrounding areas)15.[2].

List of Habitats:

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Biology

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Diet

Almost Exclusively: Plant Matter. Lesser Quantities of: Aquatic Invertebrates

Taxonomy

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Synonyms

Cygnus olor (Gmelin 1789) • Cygnus olor (J. F. Gmelin, 1789)

Similar Species

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Members of the genus Cygnus

ZipcodeZoo has pages for 11 species and subspecies in this genus:

C. atratus (Black Swan) · C. buccinator (Trumpeter Swan) · C. columbianus (Whistling Swan) · C. columbianus atlanticus (Tundra Swan) · C. columbianus bewickii (Bewick's Swan) · C. columbianus columbianus (Tundra Swan) · C. cygnus (Common Whooper) · C. cygnus buccinator (Trumpeter Swan) · C. melancoryphus (Black-Necked Swan) · C. melanocorypha (Black-Necked Swan) · C. olor (Domestic Swan)

More Info

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Further Reading

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Notes

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Contributors

Data Sources

Accessed through GBIF Data Portal March 12, 2008:

Identifiers

Footnotes

  1. Standard Deviation = 606.820 based on 20,000 observations. Altitude information for each observation from British Oceanographic Data Centre. [back]
  2. BirdLife International 2009. Cygnus olor. In: IUCN 2011. IUCN Red List of Threatened Species. Version 2011.2. <www.iucnredlist.org>. Downloaded on 31 January 2012. [back]
Last Revised: 7/16/2012