Birds of the World (click maps to enlarge)
Maps of bird diversity include the total species richness (using breeding, non-breeding, and combined ranges), major taxonomic groups (non-Passeriformes, Passeriformes, Tyranni, Passeri), parrots, hummingbirds, threatened species, and small-ranged species. Species considered small-ranged are those with a geographic range size smaller than the global median (i.e., the 50% of species with the smallest ranges). Maps are derived from version 3 of the digital range maps for the world’s birds in BirdLife International and NatureServe (2013).
All maps have been generated at a spatial resolution of 10×10km and use the Eckert IV equal-area projection. Maps represent native, extant species only. Tables of the bird species included are available for download here.
A zip file with higher resolution jpegs of the above maps can be downloaded here.
Thanks to Natalia Ocampo-Peñuela of Duke University for the photo of the Purplish-mantled Tanager (Iridosornis porphyrocephala).