2. Thrushcross has a left-right structure, and the side is east. Refers to a family of birds, with a slender flat mouth and long wings, good at flying and singing.

3. Thrushcross (scientific name: Turdus) is a genus of Thrushcross family, which consists of a group of medium-sized insectivorous or omnivorous birds. Body length117-300mm; Both male and female axillary feathers and alar feathers are solid colors, while male body feathers are not blue; The mouth must be developed; Wing tip. There are 69 kinds of * * * in the world. There are 16 species in China. Distributed in Africa, Europe, Asia, Oceania and America. Most species are summer migratory birds and travelers in China, and only a few species breed in China. Distributed all over the world, some species are also distributed in Pacific islands, and two species have been introduced to New Zealand. Some are migratory birds. The blackbird that breeds in China is the model species of this genus.