A few minutes Googling and on Wikipedia will point to what I think is the
fundamental problem (and again I am not an expert!) - there is no
universally accepted definition of what is a "species" and whatever rules
you make you can find problems and exceptions. (I would LOVE to be proved
wrong). It may well be of course that humans have an inbuilt need to put
everything in neat boxes and that - and any given point in time - some
things just won't fit, not matter how you arrange the boxes!
On 4 January 2013 08:28, John Wright <> wrote:
> Hi Dave:
>
> I get your point. As a layman, I always assumed a species was defined
> by appearance (visual and physical traits) and the fact that one
> species wouldn't usually hybridize with others in the same genus or
> family. If populations of a species were separated by range or
> barriers, then appearance, behaviour, calls and songs would determine
> if each was a separate species in its own right or just a sub-species.
> Then DNA analysis came along........
>
> Cheers,
>
> John
>
> On Fri, Jan 4, 2013 at 4:52 AM, Dave Torr <> wrote:
> >
> > On 3 January 2013 21:15, John Wright <> wrote:
> >>
> >> Good one, Bob! I second that motion...
> >>
> >> <>
> >> But back to species vs sub-species, it should be very simple to
> >> compare DNA and decide once an for all, and very quickly as well...but
> >> I guess then at lot of ornithologists would be out of a job!
> >>
> >> Cheers,
> >>
> >> John
> >>
> >> On Thu, Jan 3, 2013 at 6:42 PM, Robert Inglis <>
> wrote:
> >> > From all this passionate discussion on taxonomies I am assuming that
> >> > someone (or some committee) has finally come up with a viable,
> >> > scientifically based and universally accepted definition of “a
> species”.
> >> >
> >> > Would someone be so kind as to tell me what that definition is.
> >> >
> >> > Bob Inglis
> >> > Sandstone Point
> >> > Qld
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