Horqin National Nature Reserve in the Inner Mongolia autonomous region has become a paradise for migratory birds thanks to sustained efforts in wetland conservation and green development.

This autumn, a large number of birds flew into the reserve to stop, perch and forage in the wetlands and prepare for their further southward migration.

According to researchers monitoring the birds, many under the national first-class protection, such as the oriental white stork, the red-crowned crane and the white crane have arrived.

The number of gray cranes has exceeded 1,500, while little swans now number more than 500.

Meanwhile, there are nearly 10,000 bone-top chickens and tens of thousands of geese and ducks, taking the number of migratory birds in the reserve to its highest level in recent years.