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Fig. 3 | Avian Research

Fig. 3

From: Song divergence indicates an unclear relationship between the Neotropical and Nearctic Horned Larks

Fig. 3

Boxplot of the song divergence (PC1) between the Nearctic and Neotropical songs and PC1 vs PC2 scatterplot evaluated in: a the analysis using all retrieved songs, and b the analysis using one song per recording. The ellipses of the scatterplot were calculated automatically in the R software using the option of concentration ellipses (.5.8°). For the Nearctic songs, we show its geographic subclassification: Central-West (CW), North-East (NE), North-West (NW), South-West (SW), and South USA-Mexico (SM). *** = p < 0.001

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