Backyard lists in Canberra

Subject: Backyard lists in Canberra
Date: Wed, 15 Nov 95 22:25:39 +1000
Hello all.

Fellow Canberra birder John Leonard asked us these questions:
    How long is the average back-yard list?
    Which city is the best for native birds in back-yards?
    Do you get more bush birds in country-town back yards?

and advised us that
    (All right, our back-yard list is 41 after 7 months in an older Canberra
    suburb; another birding friends has 57 after three years in a similar 

The Canberra Ornithologists Group (COG) publishes an excellent Annual Bird 
Report (ABR).  Unfortunately the most recently published is for the year ended 
30 June 1991.  We are well advanced in updating our software and data 
management systems with the result that we will soon become, and remain, 
up-to-date with the ABR.

Anyway, the 1990/91 ABR shows a total of 119 species reported for Canberra.  
This was from 86 observers.  Most reports were for Canberra city, from COG's 
long-running Garden Bird Survey.

BTW.  I'm not a statistician but if you answer John's question 'How long is the 
average [Canberra] back-yard list?' by dividing 119 by 86, concluding that the 
mean number of species observed in Canberra gardens was 1.4, I suspect you'd be 
awfully wrong (;-).  In our Kambah suburban backyard, only seen by my partner 
and me at weekends, we've listed 31 species so far since 1 July 1995.

David McDonald          Voice:      +61-6-231 8904 (home)
PO Box 1355             Voice:      +61-6-274 0200 (work)
WODEN  ACT  2606        Facsimile:  +61-6-274 0201 (work)
AUSTRALIA               E-mail:       (home)
                        E-mail:  (work)

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