1. Korea Institute of Ornithology and Department of Biology, Kyung Hee University, Seoul 02447, Republic of Korea
2. Waterbird Network Korea, Seoul 03147, Republic of Korea
3. Research Center for Endangered Species, National Institute of Ecology, Yeongyang-gun Gyeongsangbuk-do 36531, Republic of Korea
4. National Research Institute of Cultural Heritage, Cultural Heritage Administration, Daejeon 35204, Republic of Korea
5. Korea Institute of Environmental Ecology, Daejeon 34014, Republic of Korea