Range data provided by Infonatura/Natureserve. Ridgely, R. S., T. F. Alnutt, T. Brooks, D. K. McNicol, D. W. Mehlman, B. E. Young, and J. R. Zook. 2005 Digital Distribution Maps of the Birds of the Western Hemisphere, version 2.1 NatureServe, Arlington, Virginia, USA

eBird and CBC Graphs created with Google Charts: https://developers.google.com/chart

Data for CBC Graph: National Audubon Society (2020). The Christmas Bird Count Historical Results Online. Available http://www.christmasbirdcount.org November, 2020

Data for eBird Graph: eBird. 2021. eBird: An online database of bird distribution and abundance. eBird, Cornell Lab of Ornithology, Ithaca, New York. Available: http://www.ebird.org. (Accessed: January 7, 2021).