Figure 12 in Integrative taxonomy reveals hidden diversity in the Catharus fuscater (Passeriformes: Turdidae) complex in Central and South America

Figure 12. Heat map showing frequency distributions of song contours within each population. Dyadic, triadic, and tetradic song contour names follow Fig. 5. Single-note songs are shown in the first column (A) and songs with five or six notes were combined into a single category, shown in the last column (FIVESIX). Open (white) circles denote song contours that were not detected in C. [f.] hellmayri, despite it having a much larger sample size than other taxa. Closed (black) circles denote contours that were only detected in one taxon.