The wetlands of Pingdu, a county-level city in Qingdao, Shandong province, began seeing a major influx of migratory birds in early December. (Photos: China Daily)

The wetlands of Pingdu, a county-level city in Qingdao, Shandong province, began seeing a major influx of migratory birds in early December.

The wetlands of Pingdu, a county-level city in Qingdao, Shandong province, began seeing a major influx of migratory birds in early December.

The wetlands of Pingdu, a county-level city in Qingdao, Shandong province, began seeing a major influx of migratory birds in early December.

The wetlands of Pingdu, a county-level city in Qingdao, Shandong province, began seeing a major influx of migratory birds in early December.

The wetlands of Pingdu, a county-level city in Qingdao, Shandong province, began seeing a major influx of migratory birds in early December.

The wetlands of Pingdu, a county-level city in Qingdao, Shandong province, began seeing a major influx of migratory birds in early December.

The wetlands of Pingdu, a county-level city in Qingdao, Shandong province, began seeing a major influx of migratory birds in early December.

The wetlands of Pingdu, a county-level city in Qingdao, Shandong province, began seeing a major influx of migratory birds in early December.

The wetlands of Pingdu, a county-level city in Qingdao, Shandong province, began seeing a major influx of migratory birds in early December.