Abstract: Through February to September, 2011, relevant studies were conducted into the nest and nest materials of the three birds of sympatric distribution, the Lonchura striata, Garrulax sannio and Pycnonotus sinensis, in planted forest of Nanchong Xishan Scenic Spot. In the studied area, the nests for the three kinds of bird are 19 in total. The nest data detected indicate that no significant difference is found in the parameters of the height of the nest above the ground, the dry weight of the nest, the outer long radius, the outer short radius, the inner short radius between the three kinds of bird; yet extra significance is observed in parameters like the depth of nest and the height of nest between Lonchura striata and its other two peers, while extra significance is found between the Lonchura striata and Garrulax sannio in the parameter of the inner long radius; the three kinds of nest can obviously be divided into three layers: the fixed layer, the water proof layer and the temperature control layer; the nest materials were found relatively diversified: the number of material used for nests is 16, 27, and 25 for Lonchura striata, Garrulax sannio and Pycnonotus sinensis respectively, which belongs to the family of Gramineae, sedge, Lauraceae, Moraceae, etc. Of which there are 12 plants the three birds have in common in their choice of nest materials, such as the cogongrass, fernleaf hedge bamboo leaf and so on; the top three materials the three birds use for nest are fiorin, loquat leaf and hispid arthraxon in turn, accounting for 43.68%, 13.98% and 14.05% of the dry weight of their nest respectively.