Most winters, birders in the United States can expect to see the typical feathered visitors: northern cardinals, black-capped chickadees, etc. But occasionally, a sudden surge of birds wanders ...

The latest version of BirdCast creates live migration maps and dashboards that show the number of birds passing over the United States. (Credit: Dokter, A. 2023. BirdCast, live migration map ...

migratory birds disappeared into the mud at the bottom of ponds and lakes where they would spend the winter. Since then, our understanding of migration has indeed improved. Instrumental in ...