Variation in Seasonal Movement and Body Size of Wintering Populations of Black-Headed Gull in Japan

• Published in: Ornithological Science
• Main Authors: Yusuke Sawa, Hisashi Sugawa, Takeshi Wada, Tatsuo Sato, Hiroshi Arima, Norie Yomoda, Isao Nishiumi
• Format: Text
• Language: English
• Published: The Ornithological Society of Japan 2025
• Subjects: Banding and recovery; Chroicocephalus ridibundus; Kamchatka Peninsula; Pacific; Kamchatka; Black-headed Gull; Siberia
• Online Access: https://doi.org/10.2326/osj.24.55

Bird-banding surveys are a long-established method for revealing aspects of bird migration. However, this method is often criticized for its bias in recovery or resighting locations owing to the uneven distribution of observers, and its reliance on opportunistic observations. In this study, we exami...