最終更新日：2024/07/30
(ornithology) A small feather located at the base of a bird's bill that has little or no vane.
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basal bristle
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(ornithology) A small feather located at the base of a bird's bill that has little or no vane.
basal bristle
DiQt（ディクト）
無料
★★★★★★★★★★
