Some authorities recognise the SIPO as a subspecies of the European 
Oystercatcher (H. ostralegus finschi). Most lists don't accept this (the 
distribution is incredibly disjunct), but it still gets used.
Interestingly, some lists also have the Chatham Oystercatcher as a race of 
the Variable Oystercatcher.
Regarding common names, I assume NZ has an official list of common names, 
and whether this differs from the field guides I am not certain. However, NZ 
doesn't seem to have done what Birds Australia tried to do and get 
internationally accepted names used in this country. Hence, most cormorants 
are still Shags, smaller albatrosses are Mollymawks, etc. The Red-billed 
Gull is slightly different in that some authorities accept as a separate 
species from the Silver Gull (rather than a subspecies) and Red-billed Gull 
would be the accepted name. This would distinguish it from the Black-billed 
Gull.
Anyway, Scientific Names are the important one to look at.
Cheers,
Peter
 
From: "crompton" <>
To: "birding aus" <>
 Subject: [Birding-Aus] New Zealand Oystercatchers Date: Mon, 10 Jul 2006 
18:24:45 +1000
 Hi all, Just got a copy of The hand guide to the birds of New Zealand. Its 
list of oystercatchers are as follows
 Pied Oystercatcher - Haematopus ostralegus ( a totally differant bird to 
the one we find in Australia - Haematopus longirostris???)
Chatham Island Oystercatcher -  Haematopus chathamensis
Variable Oystercatcher - Haematopus unicolor
 There was no mention of the South Island Oystercatcher - Haematopus 
finschi. Is it a recent new species? The book says it was published in 
2001!  Also the book seems to use alot of names for birds that are more 
like slang or just plain uncommon or ambiguous ( example above with Pied 
Oystercatcher )  than official english names and I'm not talking about 
names like Kakpo or kea, I'm talking about Red billed gull for Silver gull 
and Pied Shag for Pied Cormorant and even Black Browed Mollymawk for Black 
Browed Albatross!
Any thoughts on what some of you might think is a trival matter? my 
appologies if you do
many thanks in advance
G.Crompton
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