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Neoaves
clade, birds
Australaves
Telluraves
(core landbirds), clade, birds
Columbimorphae
(pigeons, sandgrouse & allies), clade, birds
Galloanserae
superorder, birds
Nucleotide Protein
Psittaculidae
family, birds
Perdicinae
subfamily, birds
Passeroidea
superfamily, birds
Agapornis
genus, birds
Fringillinae
Fringilla
Streptopelia
Cacatuidae
(cockatoos), family, birds
Nymphicus
Melopsittacus
Psittacula
Psittacidae
(parrots), family, birds
Psittaciformes
(parrots and others), order, birds
Fringillidae
Passeriformes
(song birds), order, birds
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