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.
A total of 47 species were captured during the joint Japan-Russia bird banding research conducted on the Kamchatka Peninsula from 1998 to 2000. Data for Identifying subspecies, sex and age were collected for each species.
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