Figure 2.

Principal components analysis of morphological variation. Based on 6 morphological traits (wing length, tail length, tarsus length, bill length, bill width and bill depth) across 214 individuals of Z. borbonicus from 11 localities in Réunion (colored markers, with highland sites represented by triangles and lowland sites by filled circles) and Mauritius (black markers). The variance explained by PC1 and PC2 is 44% and 27%, respectively (see Table 2)

Milá et al. BMC Evolutionary Biology 2010 10:158   doi:10.1186/1471-2148-10-158
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