To: "Scott O'Keeffe" <>
Subject: 1080
From: Laurie & Leanne Knight <>
Date: Thu, 16 Aug 2001 18:54:24 +1000
Scott O'Keeffe wrote:
> Your original post suggested that cats or dogs are several orders of
> magnitude more abundant than foxes.  If there are 50,000 dogs in Brisbane,
> your assessment implies that there are about 500 foxes in Brisbane.  There
> would certainly be more than 500 foxes in Brisbane.  In suggesting that
> foxes are very common in Brisbane, I mean that, for a top level predator,
> they are very common.  Compared with estimates of fox density from other
> locations, it can also be said that foxes are very common in Brisbane.
> 10,000 is not too likely, but I wouldn't rule this out as a possibility for
> greater Brisbane.  As far as I know, no exhaustive surveys have been
> undertaken for GB.
> As far as diet goes, few studies have been done in the Brisbane area, and
> not many have been done in urban areas generally.  Best work comes from
> Melbourne.  One study I was involved in looked at scat samples from the
> Boondall wetlands and surrounds.  The most common vertebrate remains in fox
> scats in that study were bandicoot.  Still common around Brisbane, but in
> southern populations centres, disappearing, and foxes are heavily
> implicated. Surprisingly, the remains contained no evidence of hares.
> Brush Turkeys?  As I understand it, recruitment for Brush Turkeys in
> suburban Brisbane is low, and it has been suggested that the birds seen in
> the outer suburbs move into these areas from outlying forest.  I havn't seen
> any evidence to prove or disprove the idea that foxes take Brush Turkeys.
> The fact that we see Turkeys around the 'burbs is not necessarily evidence
> of a lack of predation.  Foxes could be picking the Turkeys off, providing
> vacant territories for birds dispersing from outlying forest areas.  Perhaps
> these vacant territories are rapidly filled by 'new' birds, conveying the
> impression that individual birds survive in an area year after year.  Are
> the Turkeys we see from one year to the next the same birds, or 'new' birds
> which have taken up vacant territories?   I also repeat what I said
> previously about eggs.  Foxes love eggs, and eggs in a large heap of
> decaying organic material....?  You can't tell me that isnt likely to
> attract foxes.

I doubt the Mt Gravatt turkey population is heavily predated - I used to
live in a different street and had a long term mound the other side of
the back fence [see references to Lord Jim, sire of many young turks in
the archives].  I remember seeing three young turks moving through my
yard in convoy, and I saw another emerge from the mound.

As for the number of pet cats and dogs in the Brisbane metro area, I
would expect there to be a couple of hundred thousand ...

Birding-Aus is on the Web at
To unsubscribe from this mailing list, send the message
"unsubscribe birding-aus" (no quotes, no Subject line)

<Prev in Thread] Current Thread [Next in Thread>
  • 1080, Chris
    • Fox numbers., Jon Wren
    • 1080, Laurie & Leanne Knight
      • 1080, Scott O'Keeffe
        • 1080, Laurie & Leanne Knight
          • 1080, Scott O'Keeffe
            • 1080, Laurie & Leanne Knight
              • 1080, Scott O'Keeffe
              • 1080, Laurie & Leanne Knight <=
              • 1080, Scott O'Keeffe
    • 1080, Peter Woodall
      • 1080, Scott O'Keeffe

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