more dead Short-tailed Shearwaters

To: <>
Subject: more dead Short-tailed Shearwaters
From: "Michael Norris" <>
Date: Thu, 31 Oct 2013 10:54:51 +1100
Many thanks to Mark Carey for his informed input.

Not wanting to be alarmist or warmist, perhaps he can help with my vague 
recollection that about 5 years ago there were concerns about adverse 
conditions (algae?) in Alaskan waters attributed to climate change that may 
have affected the STSH. Along with that I’ve also vague memories of some bird 
species being significantly affected due to the changing composition of fish 

A friend did a couple of autopsies on birds along eastern Port Phillip with the 
following results:

(1) In good condition. Well muscled. Stomach full. Partly digested small fish 
and interestingly 2 small octopus, about 2 inches long. Haemorrhage in the 
abdomen. Not quite sure where from but quite bruised along the back muscles 
(could see this when the abdominal contents were lifted out. Suspect the 
haemorrhage is part of the cause of death but not sure where it comes from? 
External trauma? Are there any predators that might attack them? No signs of 
external injury but difficult to see through all the feathers. No hooks or 
plastic present.
(2) In very light condition. Stomach empty. Migration stress / starvation 

My guess is that the first bird may have been attacked by a Pacific Gull.  Is 
that likely?  Any other conjectures (the biggest fun in birding)?

And I note it had eaten some small fish.

Michael Norris

To unsubscribe from this mailing list,
send the message:
(in the body of the message, with no Subject line)
<Prev in Thread] Current Thread [Next in Thread>

The University of NSW School of Computer and Engineering takes no responsibility for the contents of this archive. It is purely a compilation of material sent by many people to the birding-aus mailing list. It has not been checked for accuracy nor its content verified in any way. If you wish to get material removed from the archive or have other queries about the archive e-mail Andrew Taylor at this address: andrewt@cse.unsw.EDU.AU