Fig. 5

Presence-absence maps for the three Olive Sparrow groups based on ecological niche models projected onto the geographic areas for the Gulf group (violet), Pacific group (red), and Yucatan group (orange). Maps depict suitable historical distribution areas for climate niches across the Present, the Holocene, and Last Glacial Maximum (LGM) and Last Interglacial (LIG) periods of the late Pleistocene. For the Present, maps show the distribution within the accessible area. Darker colors depict regions of historical climatic stability in a pairwise comparison with the Present. Smaller areas for Yucatan group in LGM are pointed with arrows