A group of whooper swans, a natural monument in South Korea, flies over the Gyeongpo Lake in Gangneung, Gangwon-do, on Jan. 26, 2022. (Yonhap)
Photo by Yoo Hyung-jae
[Yoo Hyung-jae, who took these pictures, is a photo reporter at Yonhap News Agency who specializes in the ecological field.]
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