You cannot use hybridization as a proof for subspecies versus species. It is
way more complicated. Hybridization happens in a narrow defined zone between
what is considered two species nowadays. In contrast, a "blurry dilution" of
the hybridization zone is more of an indicator of the two populations being
subspecies (or just morphs).
Nikolas
----------------
Nikolas Haass
Sydney, NSW
________________________________
From: Simon Starr <>
To:
Sent: Thursday, November 24, 2011 8:19 PM
Subject: Definition of a species
Hi all,
David James' comments on this subject are detailed and very informative.
Taxonomy is not a subject that I delve into too deeply but I am curious as
to other birding-aussers comments on David's final comments.
"Here's the thing: it is not that hard to resolve the
species-or-subspecies issue when the breeding distributions abut. Lurida and
ocellata breed side by side in NQ with ocellata sort of surrounding lurida
in
its rainfor enclave, Either they hybridise and are therefore subspecies or
they
don't and are therefore species. Recent forest clearing may bl the picture,
and
perhaps a small amount of hybridisation is hard to interpret, but there
aren't
many data."
Can someone please tell me, how this statement fits with the two species
Yellow-throated Miner and Black-eared Miner ?
I guess I am effectively asking for a definition of a species if one exists.
Thanks,
Simon Starr.
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