Figure 1

Phylogenetic estimate of the evolutionary time-scale of passerines, with 95% credibility intervals plotted for estimated divergence times (thin blue bars). Thick red bars represent the realized age priors (95%) for the constrained nodes. Labels A-F indicate calibration points and fossil placements, A: vicariance event separating New Zealand from Antarctica, B: honeyeater (Meliphagidae) [44], C: logrunner (Orthonychidae) (JMTN, unpublished observations), D: crown-group cracticid (Cracticidae) [41], E: oriolid (Oriolidae) [42], F: "climbing Certhioidea" [43]. Panel below figure indicates the geological time line; Q: Quaternary, Pl.: Pliocene, P: Pleistocene.