The bird belongs to the Otidae family of Gruiformes order. Its scientific name is Otis tarda (Latin), or Great Bustard (English).     

It is a large-size avifauna, with full body length of about 100 centimeters. Male birds are steel gray in head, neck and prothorax, and approximately white in laryngeal, with spindly pinfeather on larynx sideways protruding out as palp. Female birds have no palps around the larynx. The rest of the upper body is mostly maple, full of black transverse spots. The two wings are mostly hoar, and the remiges are black. The central rectrices are chestnut brown, with sparse black spots and white feather tip. The portion below the chest is pure white. The beak is lead gray, and the feet are brown.

Great Bustard inhabits in extensive grasslands, semi-desert zones and farmland meadows, feeding on verdant weed, insects and fishes, etc. It is not good at flying, but capable of running fast in grassland. It breeds in late spring and early summer, building nests on grassland slopes. It spawns 2 to 3 eggs per breed, which are dark green or dun, with irregular lumpish spots. The male and female birds hatch in turns, and the incubation period lasts about 28 to 31 days. About 35 days after birth the young bird will have flying ability. It usually moves southward for hibernation in autumns.

Great Bustard propagates in Xinjiang Uygur Autonomous Region, Inner Mongolia, Jilin and Heilongjiang provinces, and hibernates in the lower reaches of the Yellow River. It can be occasionally seen in Hubei, Jiangxi, Anhui, or Fujian provinces, etc. There is probably only several thousand of it living in wildness. The bird has been listed in Appendix I of International Trade Convention on Endangered Wild Animal and Plant Species.