Fang, L.; Zhang, J.; Zhao, Q.; Solovyeva, D.; Vangeluwe, D.; Rozenfeld, S. B.; Lameris, T.; Xu, Z.; Bysykatova-Harmey, I.; Batbayar, N. Two Distinct Flyways With Different Population Trends of Bewick’s Swan Cygnus Columbianus Bewickii in East Asia. Wildfowl 2020, 13-42.