What species is the blue long-tailed bird on the campus of Xi Jiaotong University?

Any of several long-tailed birds of the family passeriformes. The most familiar species is Darkmouth magpie (Pica? Pica), 45 cm (18 inch) long, black and white with a blue-green rainbow at the end. Living in northwest Africa, the whole Eurasia and western North America. It is found in farmland and dense trees in Yuan Ye, and feeds on insects, grains, small vertebrates, eggs and chicks of other birds and fresh animal carcasses; Its nest is big and round, made of mud and branches. The blue crabs, sea crabs and sea crabs in Asia are bright blue or green. For the magpies in Australia, please refer to the article "Magpie Bell".