This map depicts the post-breeding migration season range boundary, defined as areas where the model predicts the species to be present on at least 1 out of 7 days in a given week, with no more than 1% of the entire range representing areas of false detection.
eBird data from 2004-2016. Estimated for 2016.
Fink, D., T. Auer, A. Johnston, M. Strimas-Mackey, M. Iliff, and S. Kelling. eBird Status and Trends. Version: November 2018. https://ebird.org/science/status-and-trends. Cornell Lab of Ornithology, Ithaca, New York.