Fig. 2.

Phenotypic variation across the geographic range of Junco. The colored areas on the map represent breeding ranges of eight genetically differentiated groups of juncos abbreviated as follows (clockwise from the south): VOJU, volcano junco, dark-orange; YEJU, yellow-eyed junco, yellow-orange; RBJU, red-backed junco, green; GHJU, grey-headed junco, green; ORJU, Oregon junco, bright blue; SCJU, slate-colored junco, light blue; WWJU, white winged junco, medium blue; PSJU, pink-sided junco, grey-blue (after Mila et al. 2007) (© 2007 Royal Society). Asterisks indicate populations studied by our research group in CA, SD, and VA.