Between brackets is the number of accepted extant species
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Shows the number of accepted extant species within the taxon
The last expanded taxon is highlighted
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- Biota (879)
- Kingdom Animalia (681)
- Phylum Annelida (119)
- Phylum Arthropoda (168)
- Phylum Bryozoa (3)
- Phylum Chaetognatha (2)
- Phylum Chordata (276)
- Subphylum Tunicata (6)
- Subphylum Vertebrata (270)
- Infraphylum Agnatha (3)
- Infraphylum Gnathostomata (267)
- Parvphylum Chondrichthyes (6)
- Parvphylum Osteichthyes (124)
- Megaclass Tetrapoda (137)
- Superclass Reptilia (126)
- Class Aves (126)
- Order Accipitriformes (1)
- Order Anseriformes (43)
- Family Anatidae Vigors, 1825 (43)
- Genus Aix Boie, 1828 (1)
- Genus Alopochen Stejneger, 1885 (1)
- Genus Anas Linnaeus, 1758 (5)
- Species Anas acuta Linnaeus, 1758
- Species Anas americana Gmelin, 1789
- Species Anas clypeata Linnaeus, 1758 accepted as Spatula clypeata (Linnaeus, 1758)
- Species Anas crecca Linnaeus, 1758
- Species Anas penelope Linnaeus, 1758 accepted as Mareca penelope (Linnaeus, 1758)
- Species Anas platyrhynchos Linnaeus, 1758
- Species Anas querquedula Linnaeus, 1758 accepted as Spatula querquedula (Linnaeus, 1758)
- Species Anas strepera Linnaeus, 1758
- Genus Anser Brisson, 1760 (7)
- Genus Aythya Boie, 1822 (4)
- Genus Branta Scopoli, 1769 (4)
- Genus Bucephala Baird, 1858 (1)
- Genus Cairina Fleming, 1822 (1)
- Genus Chen Boie, 1822 (1)
- Genus Chenonetta Brandt, 1836 (1)
- Genus Chloephaga Eyton, 1838 (1)
- Genus Cygnus Bechstein, 1803 (4)
- Genus Mareca Stephens in Shaw, 1824 (1)
- Genus Marmaronetta Reichenbach, 1853 (1)
- Genus Mergellus Selby, 1840 (1)
- Genus Mergus Linnaeus, 1758 (2)
- Genus Netta Kaup, 1829 (1)
- Genus Oxyura Bonaparte, 1831 (1)
- Genus Spatula Boie, 1822 (2)
- Genus Tadorna Von Oken, 1817 (3)
- Order Charadriiformes (37)
- Order Ciconiiformes (9)
- Order Coraciiformes (1)
- Order Falconiformes (8)
- Order Gaviiformes (3)
- Order Gruiformes (7)
- Order Passeriformes (9)
- Order Pelecaniformes (1)
- Order Phoenicopteriformes (1)
- Order Podicipediformes (3)
- Order Procellariiformes (1)
- Order Strigiformes (1)
- Genus Gulosus Montagu, 1813 (1)
- Class Amphibia (2)
- Class Mammalia (9)
- Superclass Pisces
- Phylum Cnidaria (5)
- Phylum Ctenophora (3)
- Phylum Echinodermata (7)
- Phylum Kinorhyncha (2)
- Phylum Mollusca (70)
- Phylum Nematoda (1)
- Phylum Platyhelminthes (1)
- Phylum Porifera (2)
- Phylum Rotifera (22)
- Kingdom Bacteria (5)
- Kingdom Chromista (179)
- Kingdom Plantae (14)
- Kingdom Protozoa