A characterization of autumn nocturnal migration detected by weather surveillance radars in the northeastern USA

(Uploaded by Plazi for the Bat Literature Project) Billions of birds migrate at night over North America each year. However, few studies have described the phenology of these movements, such as magnitudes, directions, and speeds, for more than one migration season and at regional scales. In this study, we characterize density, direction, and speed of nocturnally migrating birds using data from 13…