Rare bird sitings along Moonee Ponds Ck [whataboutMerri Ck? - both Melbo
Rare bird sitings along Moonee Ponds Ck [whataboutMerri Ck? - both Melbourne area]
"Peter Ewin" <>
Thu, 08 Feb 2007 18:17:01 +1100
These problems are probably common to all databases dealing with fauna. The
Atlas of NSW Wildlife (NOWS's database) for a long time (and possibly still)
had more records of Glossy Black-cockatoos than Yellow-taileds even though
the latter was listed as a threatened species and the latter not. There had
been an emphasis on collecting threatened species records and many observers
would also only supply them, resulting in many more records than of common
species. The same happened with Owls with many records of Powerful Owls and
virtually none of Barking Owls (which in my opinion are far rarer in NSW)
until the latter was listed much later (which then triggered a wave of
records of the latter species).
If I record a threatened species I usually record all the common stuff at
the same site to try and make the database as useful as possible (because
who knows what common species will be regarded as threatened in the future).
From: Paul Jacobson <>
To: "Dave Torr" <>
Subject: Re: [Birding-Aus] Rare bird sitings along Moonee Ponds Ck
[whataboutMerri Ck? - both Melbourne area]
Date: Thu, 8 Feb 2007 14:52:52 +1100
That's a very true observation. A case in point are the Swift Parrot
sightings in Royal Park. There were a couple of Swifties in Royal Park for
a period of about 1-2 weeks but they show up as 16% as there was a flurry
of reports to birdline, whereas Red-Rump Parrots are listed as 32% and I
see anywhere between 2 and a dozen virtually every day. Similarly Little
Lorikeets are quite plentiful at present - watched 6 preening in a tree
top this morning - but they show up as 4%.
So it's while probably advisable to treat the % as highly suspect, but I'd
still maintain the species lists tend to be fairly accurate.
Obviously errors do creep in as we all make id mistakes as Dave observes.
Places like Melbourne Zoo are also very difficult as many free range birds
are part of the collection, and the Eremaea list does seem to include a
number of collection species.
On 08/02/2007, at 2:25 PM, Dave Torr wrote:
My experience with looking at Eremaea for some sites leads me to believe
that the rarities get reported rather more readily than the common birds
not a fault of the software of course but again something than you need
be aware of.
To unsubscribe from this mailing list, send the message:
unsubscribe (in the body of the message, with no Subject line)
Advertisement: It's simple! Sell your car for just $20 at carsales.com.au
To unsubscribe from this mailing list,
send the message:
(in the body of the message, with no Subject line)
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: