Latitudinal range limits of birds in the New World

Latitudinal range limits of bird genera and species in the New World defined on the basis of occurrences from published literature, sightings, and from museum specimens (Rahbek and Graves 2001; Rahbek et al. 2012). Ranges were compiled at a resolution of 1° x 1°. References: Rahbek, C. & Graves, G. R. 2001 Multiscale assessment of patterns of avian species richness. Proc. Natl. Acad. Sci. USA 98, 4534-4539. Rahbek, C., Hansen, L. A. & Fjelds, J. 2012. One degree resolution database of the global distribution of birds. Natural History Museum of Denmark, University of Copenhagen, Denmark.