FIG. 22.9 Adaptive radiation in Darwin’s finches. Today, there are 13 different species of Darwin’s finches.
Source: Phylogenetic tree data from Fig. 2.1, p.15, finch species plot data from Fig. 2.4, p. 23, in P. R. Grant and B. R. Grant, 2008, How and Why Species Multiply, Princeton, NJ: Princeton University Press.