Report on Japan-Russia Bird Banding Expedition on Kamchatka Peninsula

Abstract

1998～2000年に実施された日露共同標識調査の結果から，優占種，日周変化，再捕獲記録，主 な種の渡り時期について解析した． ₃ 年間で合計46種5,278羽が標識放鳥され，21種361羽が再捕 montifringilla, migrated late. The data also showed that juveniles of Red-breasted Flycatcher, Rustic Bunting and Reed Bunting, which don＇t molt in the breeding area, migrated earlier than the adults, which molt completely in the breeding area. The juveniles of Common Rosefinch and Arctic Warbler, in contrast were found to migrate later than the adults, which molt in their wintering area. The captures and measurements obtained showed that the timing of body fat increase corresponded with the peak of migration in adults, but was about 10 days later in juveniles. This may account probably for juveniles taking a longer time to complete the migration than adults.

Seasonal and diurnal increases in energy stores in migratory warblers at an autumn stopover site along the Asian–Australasian flyway

“…Although there are many studies that have investigated the movement ecology of migratory birds along the Asian-Australasian flyway, including storks (Shimazaki et al 2004;Higuchi 2012), raptors (Higuchi 2012), cranes (Higuchi et al 2004), waders (Takekawa et al 2010;Reid et al 2013;Bellio et al 2017), gulls (Guo-Gang et al 2014), and songbirds (Koike et al 2016;Yamaura et al 2017;Heim et al 2018a), the knowledge with respect to how songbirds behave at stopover sites (locations where they rest and fuel between their migratory flight bouts) has increased only slowly along this flyway. Although many field studies have significantly contributed to this research area (e.g., Valchuk et al 2005;Wang et al 2006;Biserov and Medvedeva 2009;Fukai et al 2010;Nam et al 2011;Leliukhina and Valchuk 2012;Yong et al 2015Yong et al , 1998Sander et al 2017;Senda et al 2018;Bozó et al 2018a;Heim et al 2018b), there is still a strong bias in terms of number of studies and therefore general knowledge of songbirds' stopover ecology towards the Nearctic and the Palaearctic-African flyway. Since songbird migrants spend far more time and energy during stopover than during migratory flights (Wikelski et al 2003;Schmaljohann et al 2012), we can learn from stopover ecology studies how songbirds organise their migratory journey in terms of these two currencies, reviewed e.g.…”