Discovery of a Streaked Shearwater breeding colony on Takashima Island in the Seto Inland Sea
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- Seki Shin-ichi
- Kansai Researh Center, Forestry and Forest Products Research Institute
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- Yasuda Masatoshi
- Kyushu Researh Center, Forestry and Forest Products Research Institute
Bibliographic Information
- Other Title
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- 瀬戸内海南縁部におけるオオミズナギドリの新たな集団繁殖地の発見
Abstract
<p>We have discovered a new breeding colony of Streaked Shearwater Calonectris leucomelas on Takashima Island, situated in the Hoyo Channel on the southern edge of the Seto Inland Sea. We observed 122 nesting burrows without accumulated sediment, which indicates recent use, within 0.28ha of the breeding site. The island is located centrally between the three known breeding sites of Uwashima Island in the Seto Inland Sea to the north, and Okinokuroshima Island and Ojishima Island in the Bungo Strait to the south, forming a network of small colonies in this region. Infrared-triggered cameras were placed in the colony and identified three probable predator species, together with the shearwaters, using the burrows: rat Rattus sp., Pallas's Squirrel Callosciurus erythraeus, and Jungle Crow Corvus macrorhynchos. An eradication project is now reducing the population of the invasive Pallas's Squirrel on Takashima Island. The effect of rats on breeding shearwater should be monitored after the squirrel-eradication project, because the rat population may increase after the squirrel control because the species share food resources.</p>
Journal
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- Bird Research
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Bird Research 17 (0), S1-S8, 2021
Japan Bird Research Association
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Keywords
Details 詳細情報について
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- CRID
- 1390005966211472384
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- NII Article ID
- 130008001968
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- ISSN
- 18801595
- 18801587
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- Text Lang
- ja
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- Data Source
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- JaLC
- CiNii Articles
- KAKEN
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- Abstract License Flag
- Disallowed