Giant Petrels

To: Birding Aus <>
Subject: Giant Petrels
From: David James <>
Date: Tue, 5 Nov 2013 23:02:15 -0800 (PST)
My recollection from the 1980s off NSW (Sydney & Wollongong pelagics) is 
that SGP was more common than NGP by about 2-1. In the last few years NGP have 
been more common than SGP off Sydney by 3:1 or so. Also, I think we almost 
exclusively see 1st year birds in recent years whereas we used to see some 
adult SGPs. I suspect that NGP is just as common now as it was in the 1980s but 
SGP is rarer. I assume it relates to changed mortality rates (perhaps long-line 
fishing mortality) , but I don't have any evidence  for that 
David James

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