birding-aus

2010 La Nina and its effect on seabirds

To: "Laurie Knight" <>, "Birding Aus" <>
Subject: 2010 La Nina and its effect on seabirds
From: "Mike Carter" <>
Date: Sat, 15 Jan 2011 11:06:53 +1100
La Nina may be having a dramatic effect on seabirds in tropical Australian waters. Below I give just a few examples which may support that theory. Our trips to Ashmore in October and November encountered far fewer Matsudaira's Storm-Petrels and Bulwer's Petrels than usual but more Hutton's Shearwaters. Arabian Shearwaters appeared but I wonder if this is a one-off & that they will disperse when this influence dies. Some seabirds breeding on Christmas Island are dramatically reduced, notably Abbott's Boobies, Brown Boobies, Christmas & Great Frigatebirds & Common Noddies (there was just one in the port area whereas usually 200). White Terns are not breeding on Cocos and are virtually absent.

Mike Carter
30 Canadian Bay Road
Mount Eliza  VIC 3930
Tel  (03) 9787 7136




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