山階鳥類学雑誌
Online ISSN : 1882-0999
Print ISSN : 1348-5032
ISSN-L : 1348-5032
51 巻 , 1 号
選択された号の論文の5件中1~5を表示しています
原著論文
短報
  • 福田 道雄
    2019 年 51 巻 1 号 p. 53-61
    発行日: 2019/06/30
    公開日: 2019/11/20
    ジャーナル フリー

    The first importation of live penguins to Japan took place when two Humboldt Penguins (Spheniscus humboldti) arrived in 1915 from Chile. One of them was donated to the Tokyo Imperial Household Museum Zoo (which later became Ueno Zoological Gardens) on June 9, 1915 by Mr. Isokichi Ozawa, the chief engineer of a Japanese merchant ship with regular service to South America. After its death it was preserved as a stuffed specimen, and its record was found in the specimen database (Tensanbu Daicho) of the Tokyo Imperial Household Museum. After the passing of this penguin, the other individual was purchased by Hanayashiki, an amusement park in the Asakusa district in Tokyo. In 1951, Mr. Haruo Takashima discovered the record for a specimen of the Humboldt Penguin registered by the same specimen number in the Tensanbu Daicho at the National Museum of Nature and Science; he later reported that it was an immature bird (Takashima 1952a). It is now believed that the specimen of the immature Humboldt Penguin at the National Museum of Nature and Science, previously considered to be of unknown origin, was one of those first two living penguins imported into the country. In addition, I found that the penguin illustrated in a traditional Japanese hanging scroll was modeled after the individual kept at Hanayashiki and that it was also an immature bird. This has led this author to assume that immature penguins that were easy to keep, were chosen for shipment to Japan.

  • 油田 照秋, 乃美 大佑
    2019 年 51 巻 1 号 p. 62-67
    発行日: 2019/06/30
    公開日: 2019/11/20
    ジャーナル フリー

    ゴジュウカラ(Sitta europaea)の繁殖生態については,樹洞営巣性であることとカラ類に比べ巣箱をあまり使わない習性からあまり詳しく調べられていない.我々は北海道大学苫小牧研究林内(42°40′N, 141°36′E)にて年間300–350個の巣箱を2009–2010および2012–2015年の6年間設置し,ゴジュウカラの繁殖を調べた.このうちゴジュウカラが利用した巣の数は合計9巣であった.繁殖パラメーターの平均値(巣数)は,産卵開始日5月8日(9),一腹卵数の平均は7.8個(9)であった.ふ化率は抱卵期に捕食を受けた巣を除くと87.3%(7),巣立ち率は85.3%(5)であった.また,抱卵期間は平均18.6日(7),孵化から巣立ちまでの日数は20.4日(5),巣立ち雛数は平均6.2羽(5)であった.

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