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The timing of the surveys would have
been fairly critical: for years there has been a substantial roost
for cockatoos and corellas. IMHO, these have been consistent
rather than 'occasional'. Obviously, the birds are absent during
the day, except when feeding, but gather in large numbers during
the evening and evident again in the morning as they set off for
the day's activities. There used to be a person in upper O'Connor
who fed very large flocks of these birds and we would get them
flying over our place from ANU roosts in the early hours of the
morning. I am not sure that that still happens now.
regards
Con
On 25/06/2013 12:44 PM, Geoffrey Dabb wrote:
The comparison with COG GBS data is
worth a comment. The period for the comparison is
presumably 2002-2012. I am surprised the PB Duck and Wood
Duck respectively have the 3rd and 4th
greatest GBS increase for that period. I am surprised the
myna has the 5th greatest increase given a
reported decline in more recent years [?]
From: Tony Lawson
[m("homemail.com.au","tlawson");">]
Sent: Tuesday, 25 June 2013 11:15 AM
To: COG chatline; aNATchat Chatline
Subject: [canberrabirds] ANU Campus Bird
Monitoring
The ANU has just released its
report on its (extended) Campus Bird Monitoring
exercise.
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