Powerful Owls

To: kbrandwood <>
Subject: Powerful Owls
From: Michael Todd <>
Date: Wed, 10 Jan 2007 21:18:00 +1100
Hello all,

In relation to the apparent success of Powerful Owls in suburbia. There are a few relevant questions that need to be asked before we can rest easy about their future.

1. How long do the Powerful Owls live?
2. What is the survival rate of the offspring?
3. What is the status of the nest hollows that the Powerfuls are using?

I can see a scenario whereby adult Powerfuls could survive and breed but not produce surviving offspring. If the tree hollows used are in dead stags what happens when these eventually collapse from natural senescence and/ or fire?

Just a few thoughts.



Michael Todd Wildlifing Images & Sounds of Nature
Latest Additions: Squirrel Glider, Tetratheca juncea, Pectoral Sandpiper
Toronto, NSW, Australia O41O 123715

kbrandwood wrote:
Hi All, Phillip asks
Is this a new phenomenon of these birds in Sydney (and maybe other cities) or 
is it just this birding-aus list making us more aware of them.
I have solicited this same question to many people even some of the experts and 
never received a complete answer.
The ones in Sydney are there more than
likely because of the Flying Fox colony a good reliable food source.I'm certain 
that more birdwatchers know the call of this species and look for the birds 
more these days. Of course there are many more bird watcher than there was 
15years ago.
I would hae thought that nesting hollows and their food source would have diminished in a urban environment so we would have less of them. Apparently not, and there are certainly good numbers of possums in most suburbs.

keith b the beautiful Hawkesbury 60km N/W of Sydney

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