basal bristle

Noun

(ornithology) A small feather located at the base of a bird's bill that has little or no vane.

Japanese Meaning

鳥のくちばしの基部に位置する小さな羽毛。羽状部分（ヴェイン）がほとんど、または全く認められない。

The ornithologist examined the hummingbird's basal bristle under the microscope to determine its structure.

鳥類学者はハチドリの嘴の付け根にある小さな羽毛を顕微鏡で調べ、その構造を明らかにした。

Sense（1）

(ornithology) A small feather located at the base of a bird's bill that has little or no vane.

basal bristles

（ plural ）