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Nucifraga caryocatactes
Diet
Pine seeds mainly, plus spruce seeds and hazelnuts, bumblebee and wasp grubs, small birds and their eggs
Size
32–38cm
Wingspan
49–53cm
The northern nutcracker, previously known as the spotted or Eurasian nutcracker, is a crow-family bird 32–38cm long with a wingspan of 49–53cm. It is slightly smaller than the Eurasian jay but has a much larger bill and a slimmer-looking head without a crest. The body is predominantly chocolate-brown with distinct white spots and patches. The southern and Kashmir nutcrackers were formerly considered subspecies (Wikipedia, general species account).
In some regions where no pines occur, the seeds of spruce and hazelnuts form an important part of the diet. It digs out bumblebee and wasp nests avidly to get at the grubs, and also takes small birds, their eggs and nestlings. The source does not describe its status in China (Wikipedia, general species account).