Some shearwaters and petrels are indeed parasitic. However, I don't believe
that Providence or Kermadec Petrels would chase terns. Also a Sooty Tern
would't do that. I just mentioned Sooty Tern because of its flight style
(straight flight, not chasing) and the petrels because of their wing pattern.
I still think that your birds were most likely Arctic Jaegers.
Cheers,
Nikolas
----------------
Nikolas Haass
Sydney, NSW
----- Original Message ----
From: John & Clare Kooistra <>
To:
Sent: Tue, February 2, 2010 8:52:22 PM
Subject: Re: jaegers
Thanks Nikolas,
The birds being pursued were definitely tern like in their flight,
white and much smaller than the Jaegers. There were also
Crested Terns in the vicinity for a size comparison.
Little Terns are reasonably common along the coast in this area.
Would Sooty Terns or Petrels chase other sea-birds for food?
Cheers,
John.
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