crow research

To: Chris Cantor <>
Subject: crow research
From: Alan McBride <>
Date: Wed, 28 Jul 2010 17:18:39 +1000

Not sure if you (or indeed the list) is aware of 
Ravens in Winter

by Bernd Heinrich

This is an absolutely outstanding book as is the follow up. Reading Ravens in 
Winter will take ravens to the top five of your favourite birds! Great book.

While I'm not sure it will answer your query (I'm getting on a bit since I read 
it and must pick it up again;-) ) it will provide a lot of anecdotal evidence 
of their behaviour. a google on him will show many 
other books such as Nesting Season: Can birds fall in Love

... and this page will give you his bio and e-mail address!

By the way, his grandfather was also involved in ornithology in Indonesia or 
Malay Archipelago, I think with AR Wallace but someone else may correct or 
elaborate on that.

Best wishes and good luck.


On 28/07/2010, at 16:55 , Chris Cantor wrote:

Dear Friend,

I am a psychiatrist based in Noosa with the University of Queensland 
researching cross species group responses to injured group members. 
Novelist Sir Walter Scott mentioned (fact or fiction) that crows may 
kill injured group members to prevent the injured member attracting 
hawks to the rookery - predator deterrence. This makes evolutionary 
sense. Trawling the web I have found references to mercy killing by 
crows which does not make such evolutionary sense. Konrad Lorenz 
described general mobbing but I have been unable to find any 
authoritative references on the predator deterrent or mercy killing 
suggestions. As I have been searching for several weeks I would be most 
appreciative if you were able to point me in the suitable directions 
(i.e. references or people who might be able to help).

Dr Chris Cantor
Home: +61 (0)7 54492992

Chris and Becky Cantor
Home: +61 (0)7 54492992

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