Cygnus atratus
From Wiktionary, the free dictionary
Proper noun
- A taxonomic species within the family Anatidae – black swan.
References
Cygnus atratus on Wikipedia.Wikipedia 
Cygnus atratus on Wikispecies.Wikispecies 
Cygnus atratus on Wikimedia Commons.Wikimedia Commons - Gill, F. and Wright, M. (2006) Birds of the World: Recommended English Names, Princeton University Press, →ISBN
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