Baikal teal_ About 95% of the world's groups are representative winter birds known to winter in Korea. More than 400,000 to 600,000 individuals are spending the winter in large groups. It is included in the Convention on the International Trade of Endangered Wildlife and Plant Species. When the sun starts to set in the evening, it starts to move. They rest in the lake during the day and prepare for the stingray ducks that start feeding at night to fly to the feeding ground. I am amazed when we perform group dance in various shapes in the evening sky. The series took about 3 months.