This photo taken on Jan. 23, 2026 shows mergansers in the waters of Vladivostok, Russia. Some birds spend the winter in the unfrozen waters of Vladivostok. (Photo by Andrey Matveenko/Xinhua)

This photo taken on Jan. 23, 2026 shows mergansers in the waters of Vladivostok, Russia. Some birds spend the winter in the unfrozen waters of Vladivostok. (Photo by Andrey Matveenko/Xinhua)

This photo taken on Jan. 23, 2026 shows mergansers in the waters of Vladivostok, Russia. Some birds spend the winter in the unfrozen waters of Vladivostok. (Photo by Andrey Matveenko/Xinhua)

This photo taken on Jan. 23, 2026 shows mergansers in the waters of Vladivostok, Russia. Some birds spend the winter in the unfrozen waters of Vladivostok. (Photo by Andrey Matveenko/Xinhua)

This photo taken on Jan. 23, 2026 shows mergansers in the waters of Vladivostok, Russia. Some birds spend the winter in the unfrozen waters of Vladivostok. (Photo by Andrey Matveenko/Xinhua)

This photo taken on Jan. 23, 2026 shows mergansers in the waters of Vladivostok, Russia. Some birds spend the winter in the unfrozen waters of Vladivostok. (Photo by Andrey Matveenko/Xinhua)

This photo taken on Jan. 23, 2026 shows a grey heron in the waters of Vladivostok, Russia. Some birds spend the winter in the unfrozen waters of Vladivostok. (Photo by Andrey Matveenko/Xinhua)