Have there ever been any attempts to estimate what the population size might
have been 200 years ago?
Peter Shute
Sent from my iPad
On 10/08/2013, at 11:34 AM, "John Graff" <> wrote:
> From the SPRAT profile for the species
>
> "The small number of confirmed or verifiable records prevents the population
> size from being assessed with any accuracy. However, the population size is
> speculatively estimated to consist of about 50 breeding birds (Garnett &
> Crowley 2000)."
>
> Garnett, S.T. & G.M. Crowley (2000). The Action Plan for Australian Birds
> 2000. [Online]. Canberra, ACT: Environment Australia and Birds Australia.
> Available from:
> http://www.environment.gov.au/biodiversity/threatened/publications/action/birds2000/index.html.
>
> Cheers,
> John
>
>> From:
>> To:
>> Date: Sat, 10 Aug 2013 01:25:43 +0000
>> CC:
>> Subject: Re: [Birding-Aus] DNA confirms elusive Night Parrot found
>>
>> Hi Lawrie,
>>
>> I've also often wondered why that figure gets bandied about. I blame a
>> non-inquiring media. Like you Lawrie, I can't believe there would be so few,
>> for the reason you stated. I suspect someone was put on the spot by a journo
>> at some point and said some offhand comment like "maybe there's as few as
>> 250". One factoid born!
>>
>> Eric
>>
>> On 10/08/2013, at 10:42 AM, "Lawrie Conole" <> wrote:
>>
>>> Thanks for posting that David.
>>>
>>> The 'factoid' repeated in this story and in various versions elsewhere -
>>> that there are only 50-250 Night Parrots in existence - continues to amaze
>>> me. Having just completed a PVA (population viability analysis) for
>>> Carnaby's Cockatoo, I have contemplated some of the demographic factors
>>> that allow a species to persist. If, as it appears likely, that Night
>>> Parrots still exist in SW Qld and NW WA (and tantalisingly maybe in NW
>>> Vic), there would have to be >250 birds extant across this broad brown
>>> land, surely. Maybe the difficulty associated with finding the things
>>> clouds otherwise clear heads, and generates low estimates in an attempt to
>>> rationalise the tiny number of sightings by biologists/naturalists??
>>>
>>> L.
>>>
>>> ++++++++++++
>>> Lawrie Conole
>>> Kyneton 3444
>>> Australia
>>> lconole[at]gmail.com
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