Graphical output of GeneLand (map) and Structure (inset) analyses for best K = 3 along the coast of the Gulf of Mexico.

Numbers below Structure output correspond to the nine sampled populations of Seaside Sparrow (see Fig. 1). GeneLand output has been cropped to remove much of the area (Gulf of Mexico) not occupied by Seaside Sparrows. Note that no birds were sampled from the western Florida panhandle, and no population assignment for birds in this area is possible based on our data. Axes (latitude and longitude) are only relevant to GeneLand output.