June 5th is World Environment Day.

Bande Lake, the Tuotuo River at the source of the Yangtze River, is the area with the largest number of bar-headed geese. From the end of April to mid-June every year, thousands of bar-headed geese fly from India and Nepal to Bande Lake to give birth. At the beginning of the month, the female geese will migrate to South Asian countries to spend the winter with their young geese.

  As of June 5, the number of bar-headed geese at the Bund Lake Wildlife Observatory has increased five times this year compared to 2012, according to the Green River Environmental Protection Promotion Association, a non-governmental environmental protection organization in China.

  The bar-headed goose is a common summer migratory bird in the Qinghai-Tibet Plateau of China, and is widely distributed in lakes and lakes on the Qinghai-Tibet Plateau.

Studies have shown that the bar-headed geese migrate mainly at night and early in the morning, and can cross the Himalayas in 4.5 hours, so they are called "the world's highest flying bird" by the National Geographic magazine.

It is currently included in the IUCN Red List of Threatened Species.

(The video of Lu Huiqian produced by reporter Sun Rui is from Green Rivers)

Responsible editor: [Wang Kai]