Waterbirds serve as indicator species for the quality and health of wetland ecosystems, and their conservation is of critical significance for global biodiversity. Citizen science has gradually emerged in recent years, playing an increasingly positive role in scientific research, particularly in ornithological studies. However, a systematic description of the application of citizen science data in waterbird conservation remains lacking. Bibliometrics is an effective method for analyzing the development of scientific disciplines, exploring trends, and examining thematic evolution. This paper utilizes bibliometric analysis of citation data from the Web of Science database, covering the period from 1970 to September 2024. The analysis reveals that this research field has undergone three distinct developmental phases, with a significant increase in annual publication volume during the third phase. Research focus has shifted from specific species and types of waterbirds to key hotspots and ecological phenomena. Future research hotspots are expected to include migratory birds, China, citizen science, and biodiversity. Influential papers within the field emphasize that the primary focus of waterbird conservation is habitat protection and the construction of habitat networks. As the discipline has developed, there is growing recognition that increasing public awareness of waterbird conservation, starting with student education, plays a crucial role in the accumulation of citizen science data and the advancement of waterbird conservation efforts.