| | español | | 
 Black-necked Swan | 
| Cygnus melancoryphus | 
| Taxonomy | 
   | 
| Black-necked Swan (Cygnus melancoryphus) | 
| in La Rambla of Montevideo, Uruguay | 
 The Black-necked Swan (Cygnus melancoryphus) was registered by Molina in 1792.  | 
 The Black-necked Swan (Cygnus melancoryphus) in the Animal Kingdom | 
 
Classification  | 
Name  | 
Notes  |  
Kingdom  | 
Animalia  | 
Animals: Multicelular systems that feed by ingestion.  |  
Subkingdom  | 
Eumetazoa  | 
Animals with bodies made of two or more symmetrical sides.  |  
Branch  | 
Bilateria  | 
Body with two symmetrical opposing sides.  |  
Phylum  | 
Chordata  | 
Chordates  |  
Subphylum  | 
Vertebrata  | 
Vertebrates  |  
Superclass  | 
Gnathostomata  | 
Vertebrates with jaws.  |  
Class  | 
Aves  | 
Birds: Vertebrates with feathers.  |  
Superorder  | 
Neognathae  | 
Birds of Flight  |  
Order  | 
Anseriformes  | 
Waterfowl & Screamers  |  
Family  | 
Anatidae  | 
Waterfowl  |  
Subfamily  | 
Anserinae  | 
Swans & Geese  |  
Tribe  | 
Cygnini  | 
Swans  |  
Genus  | 
Cygnus  | 
Swans  |  
Species  | 
Cygnus melancoryphus  | 
Black-necked Swan  |  
  | 
 
 The Black-necked Swan (Cygnus melancoryphus) has no recognized subspecies.  | 
 
   | 
| Black-necked Swan (Cygnus melancoryphus) | 
| White lines on the head, one on each side. | 
| Thickening (or knob) over the beak's base. | 
  |