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サカツラガンの渡り研究.日本で越冬していたのはもうひとつ東の集団.→Seasonal and regional differences in migration patterns and conservation status of Swan Geese (Anser cygnoides) in the East Asian Flyway https://t.co/wttywcrP4t
サカツラガンの渡り研究.日本で越冬していたのはもうひとつ東の集団.→Seasonal and regional differences in migration patterns and conservation status of Swan Geese (Anser cygnoides) in the East Asian Flyway https://t.co/wttywcrP4t
Seasonal and regional differences in migration patterns and conservation status of Swan Geese (Anser cygnoides) in the East Asian Flyway | Avian Research https://t.co/3S4ux5KrWY #ornithology