Picoides scalaris nuttalliiAQBIP03CA.jpg
United States Department of the Interior
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Picoides scalaris nuttalliiAQBIP03CA, Report on the United States and Mexican Boundary Survey, made under the direction of the Secretary of the Interior, Dryobates scalaris (illustrations), Dryobates nuttallii (illustrations)
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Picoides scalaris nuttalliiAQBIP03CA, Ladder-backed Woodpecker , ''Picoides scalaris'' (upper),  and Nuttall's Woodpecker, ''Picoides nuttallii'' (lower), hand-colored lithograph, Comparison of ladder-backed (above) and Nuttall's woodpecker
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メキシコシロハラアカガシラ、アメリカとメキシコの国境調査報告書、ドリュバテス・スカラリス、ドリュバテス・ヌッタッリイ(イルストラーション)
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ハシグロオオゲラ、ハシグロゲラ、アカゲラ、アカゲラ
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picoides secretary bird ladder-back