Whooper swans, under China's second-class state protection, swim in a lake surrounded by a desert, transforming it to a "Swan Lake" scene in Ulan county, Haixi Mongol and Tibetan Autonomous Prefecture, northwest China's Qinghai Province. (Photo provided to China News Service)
Whooper swans, under China's second-class state protection, swim in a lake surrounded by a desert, transforming it to a "Swan Lake" scene in Ulan county, Haixi Mongol and Tibetan Autonomous Prefecture, northwest China's Qinghai Province. (Photo provided to China News Service)
Whooper swans, under China's second-class state protection, swim in a lake surrounded by a desert, transforming it to a "Swan Lake" scene in Ulan county, Haixi Mongol and Tibetan Autonomous Prefecture, northwest China's Qinghai Province. (Photo provided to China News Service)
Whooper swans, under China's second-class state protection, swim in a lake surrounded by a desert, transforming it to a "Swan Lake" scene in Ulan county, Haixi Mongol and Tibetan Autonomous Prefecture, northwest China's Qinghai Province. (Photo provided to China News Service)
Whooper swans, under China's second-class state protection, swim in a lake surrounded by a desert, transforming it to a "Swan Lake" scene in Ulan county, Haixi Mongol and Tibetan Autonomous Prefecture, northwest China's Qinghai Province. (Photo provided to China News Service)
