Animalia > Chordata > Aves > Passeriformes > Certhiidae > Certhia americana > Certhia americana nigrescens Certhia americana nigrescensSynonyms: Certhia familiaris nigrescens
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Animalia > Chordata > Aves > Passeriformes > Certhiidae > Certhia americana > Certhia americana nigrescens Certhia americana nigrescensSynonyms: Certhia familiaris nigrescens
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