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1 July 2022 The Recent Range Expansion of Great Cormorants Phalacrocorax carbo in Hokkaido, Japan
Theodore E. Squires, Daisuke Aoki, Osamu Hasegawa
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Abstract

Though the Japanese population of Great Cormorants Phalacrocorax carbo has increased in recent decades, information on its spread to the northern island of Hokkaido has not been reported outside of Japan. The purpose of this paper is to update the scientific community about the distribution and breeding ecology of Great Cormorants and to provide comparative information on the abundant and phenotypically similar resident Japanese Cormorant P. capillatus. Several ornithological groups and researchers were contacted in order to gather information about the current distribution and breeding activity of the Great Cormorant in the region. This paper consolidates the findings of Japanese research groups, translated publications and direct observations.

Theodore E. Squires, Daisuke Aoki, and Osamu Hasegawa "The Recent Range Expansion of Great Cormorants Phalacrocorax carbo in Hokkaido, Japan," Ardea 109(3), 389-394, (1 July 2022). https://doi.org/10.5253/arde.v109i2.a11
Published: 1 July 2022
JOURNAL ARTICLE
6 PAGES


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KEYWORDS
colony
distribution
Hokkaido
Japan
Phalacrocorax capillatus
Phalacrocorax carbo
roost
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