To: "'Denis Wilson'" <>, <>
Subject: Galahs
From: "Philip Veerman" <>
Date: Fri, 10 Jul 2009 22:22:49 +1000
Interesting idea and may work on that basis although it involves long term benefits maybe outside the life of the individual, which makes it hard to support strongly. A more immediate benefit that is relevant to the individual doing it is that it can be similar to marking territory that the birds maintain a connection to a nest site through the year which means that they don't need to expend as much energy to re-establish or find a new one at the start of each nesting season.
Philip Veerman
24 Castley Circuit
Kambah  ACT  2902
02 - 62314041
-----Original Message-----
From: Denis Wilson [
Sent: Friday, 10 July 2009 3:29 PM
Subject: Re: [canberrabirds] Galahs

Hi Geoffrey, Julian and others.
I have heard or read that Galah chewing of bark actually helps fungi and insects to invade the wood of Eucalypts, thus leading, in the long term, to the creation of new hollows.
I cannot provide scientific evidence of this, but it does appear to make sense to me.
I cannot credit the Galahs (and other Cockatoos) with the foresight to plan for that outcome, but on an instinctive level, such behaviour could well advantage those species (and fellow hollow-dwelling creatures).
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