Black-headed gulls fly at the Green Lake Park in Kunming, capital of southwest China's Yunnan Province, Dec. 18, 2016. Every year, black-headed gulls migrate to Kunming to live through the winter. (Xinhua/Lin Yiguang)
Black-headed gulls fly at the Green Lake Park in Kunming, capital of southwest China's Yunnan Province, Dec. 18, 2016. Every year, black-headed gulls migrate to Kunming to live through the winter. (Xinhua/Lin Yiguang)
Citizens view the black-headed gulls at the Green Lake Park in Kunming, capital of southwest China's Yunnan Province, Dec. 18, 2016. Every year, black-headed gulls migrate to Kunming to live through the winter. (Xinhua/Lin Yiguang)
Visitors watch brown-headed seagulls at a seaside recreation area in Bang Pu, central Thailand's Samut Prakan Province, Dec. 20, 2016. The shores of the Gulf of Thailand serve as a major wintering site for flocks of brown-headed gulls that migrate southwards between mid-October and the end of April.(Xinhua/Li Mangmang)
A woman and her daughter feed brown-headed seagulls at a seaside recreation area in Bang Pu, central Thailand's Samut Prakan Province, Dec. 20, 2016. The shores of the Gulf of Thailand serve as a major wintering site for flocks of brown-headed gulls that migrate southwards between mid-October and the end of April.(Xinhua/Li Mangmang)
A man takes photos of his two companions feeding a flock of brown-headed seagulls at a seaside recreation area in Bang Pu, central Thailand's Samut Prakan Province, Dec. 20, 2016. The shores of the Gulf of Thailand serve as a major wintering site for flocks of brown-headed gulls that migrate southwards between mid-October and the end of April. (Xinhua/Li Mangmang)
A flock of brown-headed seagulls are seen at a seaside recreation area in Bang Pu, central Thailand's Samut Prakan Province, Dec. 20, 2016. The shores of the Gulf of Thailand serve as a major wintering site for flocks of brown-headed gulls that migrate southwards between mid-October and the end of April.(Xinhua/Li Mangmang)
A brown-headed seagull strolls on a stone railing at a seaside recreation area in Bang Pu, central Thailand's Samut Prakan Province, Dec. 20, 2016. The shores of the Gulf of Thailand serve as a major wintering site for flocks of brown-headed gulls that migrate southwards between mid-October and the end of April.(Xinhua/Li Mangmang)
A couple takes photos of a brown-headed seagull at a seaside recreation area in Bang Pu, central Thailand's Samut Prakan Province, Dec. 20, 2016. The shores of the Gulf of Thailand serve as a major wintering site for flocks of brown-headed gulls that migrate southwards between mid-October and the end of April.(Xinhua/Li Mangmang)
Six brown-headed seagulls rest in a row on a stone railing at a seaside recreation area in Bang Pu, central Thailand's Samut Prakan Province, Dec. 20, 2016. The shores of the Gulf of Thailand serve as a major wintering site for flocks of brown-headed gulls that migrate southwards between mid-October and the end of April. Xinhua/Li Mangmang)
Several brown-headed seagulls are seen hovering over a seaside recreation area in Bang Pu, central Thailand's Samut Prakan Province, Dec. 20, 2016. The shores of the Gulf of Thailand serve as a major wintering site for flocks of brown-headed gulls that migrate southwards between mid-October and the end of April. (Xinhua/Li Mangmang)
Migratory birds are seen at Poyang Lake, east China's Jiangxi Province, Dec. 24, 2016. According to the minitoring of the Poyang Lake National Nature Reserve, more than 160,000 migratory birds of 14 categories have arrived at the lake area in Jiangxi Province. (Xinhua/Hu Chenhuan)
Migratory birds are seen at Poyang Lake, east China's Jiangxi Province, Dec. 24, 2016. According to the minitoring of the Poyang Lake National Nature Reserve, more than 160,000 migratory birds of 14 categories have arrived at the lake area in Jiangxi Province. (Xinhua/Hu Chenhuan)
Migratory birds are seen at Poyang Lake, east China's Jiangxi Province, Dec. 23, 2016. According to the minitoring of the Poyang Lake National Nature Reserve, more than 160,000 migratory birds of 14 categories have arrived at the lake area in Jiangxi Province. (Xinhua/Hu Chenhuan)
Migratory birds are seen at Poyang Lake, east China's Jiangxi Province, Dec. 24, 2016. According to the minitoring of the Poyang Lake National Nature Reserve, more than 160,000 migratory birds of 14 categories have arrived at the lake area in Jiangxi Province. (Xinhua/Hu Chenhuan)
Migratory birds are seen at Poyang Lake, east China's Jiangxi Province, Dec. 23, 2016. According to the minitoring of the Poyang Lake National Nature Reserve, more than 160,000 migratory birds of 14 categories have arrived at the lake area in Jiangxi Province. (Xinhua/Hu Chenhuan)
Migratory birds are seen at Poyang Lake, east China's Jiangxi Province, Dec. 24, 2016. According to the minitoring of the Poyang Lake National Nature Reserve, more than 160,000 migratory birds of 14 categories have arrived at the lake area in Jiangxi Province. (Xinhua/Hu Chenhuan)
Migratory birds are seen at Poyang Lake, east China's Jiangxi Province, Dec. 23, 2016. According to the minitoring of the Poyang Lake National Nature Reserve, more than 160,000 migratory birds of 14 categories have arrived at the lake area in Jiangxi Province. (Xinhua/Hu Chenhuan)
Migratory birds are seen at Poyang Lake, east China's Jiangxi Province, Dec. 23, 2016. According to the minitoring of the Poyang Lake National Nature Reserve, more than 160,000 migratory birds of 14 categories have arrived at the lake area in Jiangxi Province. (Xinhua/Hu Chenhuan)
Migratory birds are seen at Poyang Lake, east China's Jiangxi Province, Dec. 24, 2016. According to the minitoring of the Poyang Lake National Nature Reserve, more than 160,000 migratory birds of 14 categories have arrived at the lake area in Jiangxi Province. (Xinhua/Hu Chenhuan)
Migratory birds are seen at Poyang Lake, east China's Jiangxi Province, Dec. 28, 2016. According to the monitoring of the Poyang Lake National Nature Reserve, more than 160,000 migratory birds of 14 categories have arrived at the lake area in Jiangxi Province. (Xinhua/Song Zhenping)
Migratory birds are seen at Poyang Lake, east China's Jiangxi Province, Dec. 28, 2016. According to the monitoring of the Poyang Lake National Nature Reserve, more than 160,000 migratory birds of 14 categories have arrived at the lake area in Jiangxi Province. (Xinhua/Hu Chenhuan)
Migratory birds are seen at Poyang Lake, east China's Jiangxi Province, Dec. 28, 2016. According to the monitoring of the Poyang Lake National Nature Reserve, more than 160,000 migratory birds of 14 categories have arrived at the lake area in Jiangxi Province. (Xinhua/Hu Chenhuan)
A flock of birds fly over Caohai national nature reserve in southwest China's Guizhou Province, Jan. 1, 2017. (Xinhua/Yang Wenbin)
Black-necked cranes and bar-head gooses are seen at Caohai national nature reserve in southwest China's Guizhou Province, Jan. 1, 2017. (Xinhua/Yang Wenbin)
Bar-head gooses are seen at Caohai national nature reserve in southwest China's Guizhou Province, Jan. 1, 2017. (Xinhua/Yang Wenbin)
A flock of birds fly over Caohai national nature reserve in southwest China's Guizhou Province, Jan. 1, 2017. (Xinhua/Yang Wenbin)
A kingfisher catches fish at Queshan Park in Liuzhou City, south China's Guangxi Zhuang Autonomous Region, Dec. 31, 2016. (Xinhua/Li Bin)
A kingfisher catches fish at Queshan Park in Liuzhou City, south China's Guangxi Zhuang Autonomous Region, Dec. 31, 2016. (Xinhua/Li Bin)
A kingfisher catches fish at Queshan Park in Liuzhou City, south China's Guangxi Zhuang Autonomous Region, Dec. 31, 2016. (Xinhua/Li Bin)
During a local tourism festival, a trained goshawk catches its prey in Jilin City of notheast China's Jilin Province, Dec. 22, 2016. Hunting with eagles is a traditional form of falconry among local ethnic groups. (Xinhua/Cai Yang)
During a local tourism festival, a hunter presents his goshawk in Jilin City of notheast China's Jilin Province, Dec. 22, 2016. Hunting with eagles is a traditional form of falconry among local ethnic groups. (Xinhua/Cai Yang)
During a local tourism festival, a hunter presents his goshawk in Jilin City of notheast China's Jilin Province, Dec. 22, 2016. Hunting with eagles is a traditional form of falconry among local ethnic groups. (Xinhua/Cai Yang)
During a local tourism festival, a hunter presents his goshawk in Jilin City of notheast China's Jilin Province, Dec. 22, 2016. Hunting with eagles is a traditional form of falconry among local ethnic groups. (Xinhua/Cai Yang)
A trained goshawk is seen at a local tourism festival in Jilin City of notheast China's Jilin Province, Dec. 22, 2016. Hunting with eagles is a traditional form of falconry among local ethnic groups. (Xinhua/Cai Yang)
