Hi all
There has also been a decline of House Sparrows in Queensland (mainly
Brisbane) gardens as indicated by the QOS/BirdsQueensland Garden Bird
Surveys conducted in 1979/80 and again in 1999/2000 (Sunbird 32: 37-51).
The number of gardens they were reported from declined from 69 to 37%, the
total number records (=weeks) of House Sparrows declined from 53 to 18% and
the mean maximum numbers estimated to be in gardens declined from 6.6 to 1.0.
A decline has also been reported for the Canberra populations of House
Sparrow but I'll leave Philip Veerman to say more about that.
I showed a negative correlation between Noisy Miner numbers and those of
House Sparrow (and most other small birds) but there are probably many
other factors operating as well.
Cheers
Peter
===============================
www.birding-aus.org
birding-aus.blogspot.com
To unsubscribe from this mailing list,
send the message:
unsubscribe
(in the body of the message, with no Subject line)
to:
===============================
|
