Sawa, Y.; Tamura, C.; Ikeuchi, T.; Fujii, K.; Ishioroshi, A.; Shimada, T.; Tatsuzawa, S.; Deng, X.; Cao, L.; Kim, H. Migration Routes and Population Status of the Brent Goose Branta Bernicla Nigricans Wintering in East Asia. Wildfowl 2020, 244-266.