I have seen some in the US that use the latter system - maybe with a range
of %ages as well, The trouble with absolute numbers is that they depend on
how many times the place has been visited! Many of course are seasonal as
well.....
2009/11/6 Tim Dolby <>
> Just off the top of my head, one way of doing this is by the number of
> recorded sightings i.e. vagrant equals <10, rare <100, uncommon <1000,
> common >1000+, or something like that, depending on your context, place,
> birds etc.
>
> Another way is to link it to the particular habitat type, such 'vagrant:
> few records in appropriate habitat', 'rare: rarely seen in appropriate
> habitat', 'uncommon: occasionally seen in the appropriate habitat',
> 'common: expect to see in appropriate habitat', and 'very common: you'll
> be kicking them out of your way!'
>
> Hope this helps.
>
> Tim
>
> -----Original Message-----
> From:
> On Behalf Of Pine Creek
> Pictures
> Sent: Friday, 6 November 2009 11:54 AM
> To:
> Subject: [Birding-Aus] Common-Uncommon-Rare
>
> Does anyone know if there is a standard definition of the terms Common,
> Uncommon, Rare.
>
> We are in the process of trying to update some brochures and attempting
> to assign a frequency of occurrence to the bird species.
>
> This is traditionally done with the the notations C=Common, U=Uncomon,
> R=Rare, V=vagrant etc.
>
> Here I have at least 8 various publications and checklists, all of which
> give a different definition to these terms.
>
> Thanks
>
> Dominic Chaplin
> Cairns, QLD
>
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