Diversity and distribution characteristics of threatened birds in the Beijing-Hebei Taihang Mountain priority conservation area

The diversity and distribution of threatened birds in the Beijing-Hebei Taihang Mountain priority conservation area were investigated by field transline method and historical data were examined．Four field surveys were conducted in the spring, summer, fall and winter from July 2019 to May 2020．A total of 19 threatened bird species were found, accounting for 11.87% of threatened bird species in China．Among threatened birds in the region, 1 species was critically endangered, accounting for 5.26% of threatened birds in China．Ten were endangered species, accounting for 20.00% of all threatened birds in China．Eight were vulnerable species, accounting for 8.60% of all threatened birds in China．The area is an important habitat for threatened birds such as Black Stork, Brown Eared Pheasant and many raptors．The distribution range of Black Stork and raptors in this area is wide, and the potential suitable habitat area is large．Brown Eared Pheasant is distributed in the west of Beijing and Xiaowutai and Tuoliang National Nature Reserve in Hebei province．Threatened raptors tend to live in the open mountain environment at middle and high altitudes, mainly along the ridge．