Abstract

Abstract: During April to July in 2000 and 2001,the nest site selection of Otis tarda was studied by direct observation and sampling method in the southeast grassland of Keyouqianqi in Inner Mongolia.The results showed that Otis tarda was one kind of big sized bird built nests on the ground in sparse cluster, and the smallest distance between nests was 9m. Otis tarda had a significant tendency in nest site selection.Firstly,this tendency was represented under the scale of landscape.Most nests of Otis tarda were built on the mid hill of grassland,the elevation range was from 190m to 230m,most nests built on the slopes faced to sun, and the biggest gradient was not more than8 degree.Moreover,the nests were near to roads.Secondly, Otis tarda selected its nest site according to vegetation structure.It tended to select nest site with thick hay,high vegetation density and grass height from 15cm to 35cm,but would not select the place with over high vegetation density no nest.

CLC Number:

Q958.11

WAN Dongmei, GAO Wei, ZHAO Jiang, WANG Haitao, CHENG Jinrui . [J]. Chinese Journal of Applied Ecology, 2002, (11): 1445-1448.

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