Translocation of a Blakiston's Fish Owl in Northern Hokkaido
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- Hayashi Yuko
- Faculty of Law, Sapporo University
Bibliographic Information
- Other Title
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- 北海道北部へのシマフクロウの人為的移動
- ホッカイドウ ホクブ エ ノ シマフクロウ ノ ジンイテキ イドウ
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Abstract
After an over 44-year absence, a female Blakiston's fish owl Ketupa blakistoni, was discovered in northern Hokkaido, Japan, in 2006. The owl was born in 1987 in central-eastern Hokkaido, 96km from her new location. With the goal of reestablishing a breeding population in northern Hokkaido, a male owl that had spent 10 years in captivity was relocated to the area in October 2007. The male was kept in a cage within the range of the wild female for 2 weeks prior to release. Supplementary feeding continued after release, and hunting of these supplementary fish was frequently observed. Monitoring during the 4 months after release revealed that daytime roosts were concentrated within 400m of the release point. Although the frequency of calling, which is associated with territorial advertising and intra-pair communication, was much lower than in a wild breeding pair, the two focal individuals appeared to have a close relationship, as they shared roost sites and frequently hunted together. Unfortunately, the male drowned in a fish farm pond in June 2008. Nevertheless, the relocation of captive individuals, particularly to isolated single-settler habitats, should be a priority among conservation strategies for Blakiston's fish owls in Japan.
Journal
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- Japanese Journal of Conservation Ecology
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Japanese Journal of Conservation Ecology 14 (2), 249-261, 2009
The Ecological Society of Japan
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Details 詳細情報について
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- CRID
- 1390001205207105280
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- NII Article ID
- 110007503415
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- NII Book ID
- AA11857952
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- ISSN
- 24241431
- 13424327
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- NDL BIB ID
- 10519465
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- CiNii Articles
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- Abstract License Flag
- Allowed