This is indeed my understanding as well. I think the range is wrong in the
IOC checklist. Unofrtunately the IOC checklist currently does not go down to
sub-species level.
dave
On 03/09/07, Paul Van Gasse <> wrote:
>
> Then the IOC checklist must have it wrong (I take it they only list
> species,
> not subspecies). If lumped P. simplex occurs from New Guinea to N and NE
> Australia. If split, P. simplex occurs in N Australia and P. griseiceps
> from
> New Guinea to NE Australia. As some people have pointed out, this split
> has
> happened before.
>
> Paul Van Gasse
> Kruibeke, Belgium
>
>
> -----Oorspronkelijk bericht-----
> Van:
> Namens Dave Sargeant
> Verzonden: maandag 3 september 2007 5:45
> Aan:
> Onderwerp: Re: [Birding-Aus] Question on Grey-headed
> WhistlerPachycephalagriseiceps taxonomy
>
> I wish it were that easy. Unfortunately it's not quite this simple. If
> this
> split had of happened as might have been expected (moving simplex out of
> the
> lumped species) then the IOC checklist would give the range of simplex as
> Aus to New Guinea. Unfortunately it doesn't - it gives the range of
> simplex
> as NE Aus only.
>
> So what happened in the IOC checklist to the remainder of this previously
> lumped species? It appears to have fallen off. Looking at the ranges of
> other Whistlers, none of them appear to have grisieceps absorbed into
> them.
> Confusing.
>
> dave
> On 03/09/07, Paul Van Gasse <> wrote:
> >
> > Hi Dave,
> >
> > Quite simple, really. If P. simplex is split, it becomes monotypic, all
> > the
> > other subspecies coming under griseiceps - including NE Australian
> > peninsulae. Thus, Australia gains a species, both P. simplex and P.
> > griseiceps occurring there.
> >
> > Yet, Clements did make a mistake, as P. simplex (sensu stricto) only
> > occurs
> > in N Australia (Northern Territory), not in the NE.
> >
> > Best regards,
> >
> > Paul Van Gasse
> > Kruibeke, Belgium
> >
> >
> > -----Oorspronkelijk bericht-----
> > Van:
> > Namens Dave Sargeant
> > Verzonden: zondag 2 september 2007 19:34
> > Aan:
> > Onderwerp: [Birding-Aus] Question on Grey-headed Whistler
> > Pachycephalagriseiceps taxonomy
> >
> > I've been comparing the latest Clements v6 to the IOC checklist.
> > I've encountered a few difficulties with the bird listed by Clements
> > as "Grey-headed Whistler *Pachycephala griseiceps*". This species does
> not
> > appear listed in the IOC checklist. Clements gives the range as New
> Guinea
> > to NE Australia.
> >
> > To complicate things both IOC and Clements list Grey Whislter *P.
> > simplex*as occurring in NE Australia. Therefore Clements implies that
> > *griseiceps* and *simplex* both occur, whereas IOC list only one
> species.
> >
> > Digging through old references, *griseiceps* was formerly a subspecies
> of
> > *
> > simplex* with a range of NE New Guinea only.
> >
> > The form* griseiceps* does not get a mention in my Pizzy and Knight
> Aussie
> > fieldguide, so on the surface the listing in Clemets appears to be an
> > error.
> > However there's probably more to this than meets the eye. Is
> *griseiceps*
> > a
> > synonyn of somthing else? Looking at the number of species of
> > *Pachycephala*Whistler Clements lists for Australia mainland it comes
> > to 9, whereas the
> > fieldguide has only 8.
> >
> > Any one shed any light on this?
> >
> > Thanks
> > dave
> > --
> > Dave Sargeant
> > Muscat
> > Oman
> > ===============================
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> > birding-aus.blogspot.com
> >
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>
> --
> Dave Sargeant
> Muscat
> Oman
> ===============================
> www.birding-aus.org
> birding-aus.blogspot.com
>
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--
Dave Sargeant
Muscat
Oman
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