Harteman Wildfowl, presented by Jan Harteman

Whooper swan

Cygnus cygnus

Grote wilde zwaan/ Singschwan/ Cygne sauvage

 

The Whooper Swan (pronounced hooper) is a large Northern Hemisphere swan. It is the Eurasian counterpart of the North American Trumpeter Swan (Cygnus buccinator). 

 

This species has an extremely large range, and hence does not approach the thresholds for Vulnerable under the range size criterion (Extent of Occurrence <20,000 km2 combined with a declining or fluctuating range size, habitat extent/quality, or population size and a small number of locations or severe fragmentation). The population trend is not known, but the population is not believed to be decreasing sufficiently rapidly to approach the thresholds under the population trend criterion (>30% decline over ten years or three generations). The population size is very large, and hence does not approach the thresholds for Vulnerable under the population size criterion (<10,000 mature individuals with a continuing decline estimated to be >10% in ten years or three generations, or with a specified population structure). For these reasons the species is evaluated as Least Concern by the IUCN.

The global population is estimated to number > c.180,000 individuals (Wetlands International 2006), while the population in Russia has been estimated at c.10,000-100,000 breeding pairs and c.1,000-10,000 wintering individuals (Brazil 2009).


More information: http://www.iucnredlist.org/details/100600369/0


This species is well established in both European and American wildfowl collections and zoological institutions. 


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Above: close-up picture of an adult whooper swan


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Above: a pair of whooper swans, male right.


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Above: Immature whooper swan.


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Above: a pair of adult whooper swans.


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Above: Whooper swan family, juveniles on the left.


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Above: Whooper swan and cygnets on their nest

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