Abstract:We investigated breeding groups of the Blue-crowned Laughingthrush (Garrulax courtosis) from April-July in 2013-2015 in Wuyuan, Jiangxi Province. For each breeding plaque, we measured the altitude, distance from mountain, water resource, and disturbance, we also calculated the area, perimeter, and shape index of the plaques. We set four control plaques (5km away from the breeding plaques) in the same forest type as that of the breeding plaques. Thereafter, we compared the breeding and control plaques for the factors mentioned above. The results showed that the altitude, distance from mountain, and disturbance of the breeding plaques were significantly smaller than that of the control plaques. The laughingthrush preferred to breed in low altitude, broad-leaved forests close to the mountain and village. This might be related to abundance of food and lower density of predators in these areas. At the microhabitat scale, we chose breeding site B as the study area, because it was the most stable. We measured 10 factors in the breeding area and the control area without nests of laughingthrush in the same forest. The 10 factors were analyzed with resource selection functions and selectivity coefficient of Vanderploeg and Scavia. The result of resource selection functions indicated that herb density and herb height were the main factors influencing habitat selection of the laughingthrush at microhabitat scale. However, the regression coefficient demonstrated that the laughingthrush preferred to build its nests on Celtis tetrandra,Liquidambar formosana, and Pterocarya stenoptera, with height >20m and diameter at breast height (DBH) 40-80cm, in an area with moderate-high herb coverage (60%-90%). In conclusion, these results suggested that the laughingthrush was selective for the nesting tree species, and its height and DBH. In addition, they required moderate-high herb coverage under the nesting tree. Herb density might reflect the availability of insects, which was the main food in the breeding season. This finding indicated the laughingthrush chose to nest in the area with better food abundance.