Fig. 1

Specimens from the Australian National Wildlife Collection to show phenotypically pure a P. adscitus palliceps (B43414) and b P. eximius (B32287), and three individuals displaying examples of variable hybrid plumage from within or near the putative hybrid zone: c B55643, d B55532 and e B55680. Individuals are all adult males. For collection locations and plumage scores, see Table S2