This year, the days fell on May 11-12.

On these days, DPRK media launched an information campaign for protection of migratory birds.

The government has long ago established migratory bird reservations in tidelands, seashore and islets of the country.

It set the area of Pisan-ri in Anbyon County, Kangwon Province as a sanctuary for Anbyon crane, with a series of measures taken to improve conditions of the birds' inhabitation.

The secretary of the Nature Conservation Union of Korea, Kim Sun Il, told KCNA:

Protection of migratory birds is one of the works for biodiversity.

There are nine migratory birds' flight courses throughout the world, among which the course from East Asia to Australia is considered to be a major one. This course stretches along the territories of 22 countries.

Korea, surrounded by seas on three sides, serves as one of major flight courses and a stopover for migratory birds in northeast Asia. Many species of migratory birds come to Korea in spring and autumn to lay eggs or take feed.

The government listed the areas of Mundok, Kumya, Ryongyon, Rason, Sin and Tok islets as sanctuaries.