Abstract: The stopover wetlands play an important ecological role in the migration of waterbirds, which supply energy and rest site for waterbirds. The largescale loss and degradation of wetland habitats seriously affect the migration of waterbirds. Under such context, the ecological substitute role of small and medium sized wetlands with good habitats has gradually emerged. Therefore, studies on bird resources in small and mediumsized wetlands are not only important for monitoring bird resources but also for the scientific protection of wetland networks of migratory birds. From November 2017 to December 2019, we used point sampling method and line sampling method to investigate species richness, abundance, and habitat of waterbirds in Dongpu Reservoir. A total of 118 bird species in 16 orders and 43 families were recorded. Among them, there were 2 and 10 species among China’s National Class Ⅰ and Ⅱ Key Protected Birds, including Ciconia boyciana andGrus monacha. There were 16 dominant species, including Mareca falcata, Phalacrocorax carbo, Anas zonorhyncha, Podiceps cristatus, Egretta garzetta, and Tachybaptus ruficollis. The Shannon diversity and Pielou evenness of birds in the study area were summer > autumn > winter > spring, while the Simpson dominance showed an opposite pattern. Our results showed that the role of Dongpu Reservoir as a stopover for overwintering waterbirds is expanding.

Key words: bird, diversity, wetland, stopover, Dongpu Reservoir.