日本鳥類標識協会誌
Online ISSN : 2187-2481
Print ISSN : 0914-4307
ISSN-L : 0914-4307
一般論文
初列風切内弁の白斑によるホシガラスNucifraga caryocatactes japonicaの雌雄判定の検討
西 教生
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キーワード: 雌雄判定, 剥製標本調査
ジャーナル フリー

2012 年 24 巻 1 号 p. 1-6

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I reconsidered the sex determination technique of using white spots of the inner vanes on primaries in the Spotted Nutcracker Nucifraga caryocatactes japonica. Thirty-two stuffed specimens collected at Yamashina Institute for Ornithology were examined. My results indicate that the existence of the white spot is unsuitable for use in sex determination. There were no significant differences between juvenile males and females in length of the longer axis of the white spot on primaries, or in length of the axis of the white spot on the 4th primary.

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© 2012 日本鳥類標識協会
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