1. School of Ecology and Nature Conservation, Beijing Forestry University, No. 35 East Qinghua Road, Haidian, Beijing, 100083, China
2. Dornod Protected Areas Administration, Kherlen sum, Dornod aimag, Choibalsan, 21060, Mongolia
3. Mongolian Bird Conservation Center, Ikh Toiruu, II khoroo, Ulaanbaatar, 14201, Mongolia