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More
on Mark's comment, I suppose the question has been highlighted and given
unfortunate relevance by the title of the book Birds of Canberra
Gardens. This title is far from the original concept announced years
earlier, of a report on the GBS. As far as I know, prior to the use of those
words for the title of that book, there was never any suggestion that the COG
Garden Bird Survey was in any way restricted to obtaining information only
on birds that use suburban gardens or to imply that the birds included
are necessarily "garden birds". Clearly, as Mark has said and the GBS
Report makes clear, that is not the case. This is shown from the instructions on
the chart>
Version 1 and 2 of the GBS Chart included the instruction to
include "For birds only seen flying over and not dependent on your area or seen
beyond 100 metres," (although see the GBS Report for the full context of this,
as that bit is a mere post script). Then because that was vague and confusing, I
improved on this for Versions 3 and later versions of the chart to include
the instruction "Decide
on, and keep to, a survey area equivalent to a 100 metre radius (3.1 hectares)
from house/work and include only observations from within or over this area.
There is no altitude limit, and no requirement for the birds to be 'using' the
area."
Philip
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