HE Peng, KONG De-Jun, LIU Qiang, YU Hong-Zhong, ZHAO Jian-Lin, YANG Xiao Jun. 2011: Roosting-site characteristics of wintering black-necked cranes (Grus nigricollis) at Napahai, Yunnan. Zoological Research, 32(2): 150-156. DOI: 10.3724/SP.J.1141.2011.02150
Citation: HE Peng, KONG De-Jun, LIU Qiang, YU Hong-Zhong, ZHAO Jian-Lin, YANG Xiao Jun. 2011: Roosting-site characteristics of wintering black-necked cranes (Grus nigricollis) at Napahai, Yunnan. Zoological Research, 32(2): 150-156. DOI: 10.3724/SP.J.1141.2011.02150

Roosting-site characteristics of wintering black-necked cranes (Grus nigricollis) at Napahai, Yunnan

  • From November 2009 to April 2010, roosting-site characteristics of black-necked cranes (Grus nigricollis) were observed at Napahai Provincial Nature Reserve, Shangri-La, Yunnan, China. The positions of roosting-sites were determined by triangulation with markers and field correction. All of the 63 roosting-sites observed were located in patchy marshes with water, which contained some mud on the bottom and 81% of the roosting-sites were covered by plants. They also had a certain distance to areas of human activities and had a certain distance to the shore. A comparison of roosting sites and random sites showed that roosting-sites had thicker mud layers, a higher ratio of open water, longer distance to roads, villages, and farmland, and water depth. Another comparison of before and after usage of roosting-sites found a significant difference in area of marsh patch. Principal component analysis indicated that the usage of roosting-site of black-necked cranes was affected by human disturbance, area of marsh patch, and the condition of the shallow water environment.
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