> We have seen and heard the Whipbirds in Lincoln NP, S.A., and
> heard the one at Two Peoples Bay. They have different calls, and
> if vocalisation is a significant determinant of species, and the
> TPB birds sound the same as those in the Stirling Ranges, perhaps
> those two are the same, and the Lincoln NP birds are different.
I agree that identical calls can possibly signify the same species, but I
don't know if the same can be said of the reverse. e.g. Lyrebirds are
different in different areas. Grey Shrike-thrush is certainly different.
Magpie-lark is different.
Simon Nevill (of Falcon Tours) knows the south west better than almost
anyone, and he can pick the difference in the Western Bristlebird call
between Two People's Bay and Fitzgerald River.
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