From July 24 to August 17, 1997, avifauna of birds was investigated in Sichuan Xiaman Nature Reserve-a protection area of black-necked crane and wetland ecosystem.

• 四川辖曼自然保护区是保护以黑颈鹤为主的珍禽和湿地生态系统的保护区，是黑颈鹤最集中的繁殖地。