Bird migration is the regular, long-distance movement of birds between breeding and wintering grounds, influenced by climate change and human activities. The East Asia–Australasia Flyway (EAAF) is one of the largest migratory routes in the world, covering various species such as waders and waterfowl, with the eastern coastal areas of China serving as important stopover and wintering grounds. This paper selects the Qingdao area as the research object, and based on weather radar and meteorological data, explores the spatiotemporal characteristics of bird migration patterns in this region, discusses changes in regional bird activity and their causes, and investigates the influence of weather factors on migration altitude. By analyzing weather radar data from spring 2023, the peak migration period was found to occur mainly from mid-April to mid-May, with multiple large-scale migrations in late April exhibiting alternating peaks and troughs. Migration activity peaked between 8 p.m. and midnight, with altitudes below 600 m serving as the primary migration height range. Using correlation analysis, linear regression, and generalized additive models, the study further analyzed the contribution of various weather factors to birds’ altitude selection. Results showed that wind conditions, temperature, and humidity had significant effects on migration altitude.
Qin et al. (Sat,) studied this question.