Figure 4.

Plot for scores of Principal Components Analysis Factors 1 and 2 for external mensural characters of Gyps indicus and G. tenuirostris. Gyps indicus and G. tenuirostris are significantly different (P ≤ 0.001) on Factor 1. Individuals with strongly positive scores on Factor 1 are tenuirostris, which have longer tarsi and toes, but narrower and longer rostra relative to indicus.

Johnson et al. BMC Evolutionary Biology 2006 6:65   doi:10.1186/1471-2148-6-65
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