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Neoaves
clade, birds
Aequornithes
(core waterbirds), clade, birds
Anserinae
subfamily, birds
Nucleotide Protein
Galloanserae
superorder, birds
Megadyptes
genus, birds
Eudyptula
Diomedea
Diomedeidae
family, birds
Gavia
Procellariiformes
(petrels and albatrosses), order, birds
Gaviidae
(loons), family, birds
Gaviiformes
(loons), order, birds
Spheniscus
Pygoscelis
Eudyptes
Aptenodytes
Spheniscidae
(penguins), family, birds
Sphenisciformes
(penguins), order, birds
Anser
(geese), genus, birds
Anatidae
(waterfowl), family, birds
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