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Cygnus olor

Basic information
Scientific name Cygnus olor

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コブハクチョウ
Common names Mute swan
Higher taxon Anatidae, Anseriformes, Aves
Natural range North Asia, Central Asia, Europe.
Habitat Lake or pond, stream.
Invasion information
Range in Japan Breeding in Lake Utonai, Hokkaido, and overwintering in Kasumigaura, Ibaraki Pref. Observed in Aomori, Akita, Niigata, Toyama, Ishikawa, Yamanashi, Shizuoka, Aichi Prefs., Kanto, Kinki, Chugoku, Shikoku, and Kyushu Districts. Range in Japan
Origin
Date Introduced to Hakodate, Hokkaido in 1975. Breeding in Lake Utonai, Hokkaido since 1978.
Route Deliberate introduction.
Impact Potentially: Possibly competitive with a native geese such as Anser fabalis middendorffii
Native organism(s) affected: Native geese (e.g., Anser fabalis middendorffii)
Regulation in Japan Release of this species is prohibited in Aichi Pref.
Introduced range in other countries North America, Australia, New Zealand, South Africa, etc.
Reference Notes
  • Biodiversity Center of Japan (ed) (2004) National Survey on the Natural Environment (Accessed on 2012-6-07) http://www.biodic.go.jp/reports2/6th/6_bird/index.html (in Jpn)
  • Eguchi & Amano (2004) Spread of exotic birds in Japan. Ornithol Sci 3: 3-11.
  • Eguchi & Fujimaki (eds) (2000) Check-List of Japanese Birds. Ornithol Soc Jpn
  • Kawakami & Kanouchi (2012) The Handbook of Introduced Birds in Japan. Bun-ichi Sogo Shuppan, Tokyo (in Jpn)
  • Lepage (ed) (2003-2010) Avibase the world bird database (Accessed on 2012-6-07) http://avibase.bsc-eoc.org/
  • Nakamura (ed) (1988) Alien Species of Japan. Kanagawa Prefectural Museum, Yokohama. (in Jpn)
  • etc.