Figure 2. A in The radiation of Austral teals (Aves: Anseriformes) and the evolution of flightlessness

Figure 2. A, time-calibrated Bayesian phylogeny of Austral teal mitochondrial DNA created using BEAST (for full phylogeny, see Supporting Information, Fig. S1). Branch lengths are proportional to time (in millions of years before present). Posterior probability support values are shown by the nodes subtending the branches they belong to if less than one. Divergence times and 95% highest posterior densities of node age estimates are shown in Table 2. Nodes mentioned in the main text are numbered in red next to the node. Tips are labelled with species names (see Table 1) and GenBank accession numbers. B, schematic diagram of colonization routes of the New Zealand region by the brown-teal complex. Divergence times are mean estimates based on our phylogenetic analysis in A and Table 1. Solid arrows represent known dispersal events, and dashed arrows represent inferred dispersal events.