Animalia > Chordata > Aves > Strigiformes > Strigidae > Bubo virginianus > Bubo virginianus nigrescens Bubo virginianus nigrescens (Ecuadorian great horned owl)Synonyms: Bubo nigrescens
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Animalia > Chordata > Aves > Strigiformes > Strigidae > Bubo virginianus > Bubo virginianus nigrescens Bubo virginianus nigrescens (Ecuadorian great horned owl)Synonyms: Bubo nigrescens
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