canberrabirds

Winterbirds rationale

To: Geoffrey Dabb <>
Subject: Winterbirds rationale
From: martin butterfield <>
Date: Tue, 22 Jun 2010 14:45:18 +1000
Hopefullly, people will also put in a database report AS WELL AS
responding to Geofffrey's project.

Martin

On 6/22/10, Geoffrey Dabb <> wrote:
> Some people have raised with me the basis of this exercise, and suggested
> that other species might have been included such as Grey Fantail and Tree
> Martin.  Of course they could have been, and the selection had an arbitrary
> element.  The idea was that a restricted list was more likely to attract
> reports.  Perhaps an expanded list (say 15 species) could be used for a
> similar exercise next year.  (I must say I am seeing quite a lot of G
> Fantails, and this species would be reported more, I think, than the BFCS.)
> I would be interested in suggestions as to what additional 5 species could
> most usefully be added.  The criterion is that the species should have been
> historically recorded, but in a pattern of sharply lower numbers, in the
> Winter period.
>
>
>
> The list was selected on that basis, and on the basis that the selected
> species are often regarded as ' migrants' with any late-Winter/early Spring
> sighting being reported as a 'return'.  The exercise is intended to throw
> more light on movements underlying  the oversimplified 'migrant' label.
>
>
>
> Of course there is much relevant information in the database, for which
> reports should also be submitted.  However I believe, for various reasons,
> that people are more likely to send an emailed report of sightings for a
> small number of species over a limited period than to make a report for
> database purposes.
>
>
>
> Chatline members can be expected to report other scarcities, as in recent
> reports of W-b Cuckoo-shrike and Horsfield's BC.  These are of considerable
> interest and can be added as footnotes to the final summary, but are not
> within the scope of the exercise as originally specified.
>
>
>
> At the end, people can offer any comments or criticism that they wish on the
> results.
>
>
>
> GD
>
>
>
>
>
>

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