Hello all,
Thanks everyone who responded to my query about Yellow-tailed
Black-cockatoo breeding. There were a few observations of juvenile YTBC
so it sounds as though breeding is taking place and there may not be an
immediate concern. Not much info on where they actually breed however.
I think they probably warrant being watched closely and I can't
emphasise enough the importance of noting nest sites.
Cheers
Mick
____________
Michael Todd
Wildlifing- Images of Nature- www.wildlifing.com
Ranelagh, Tasmania
Latest Additions: Updated Australian Mammals Gallery
Mobile: o41o 123715
John Tongue wrote:
Hi Mick,
We holidayed on King Island a few years back - mostly to go birding
there!
There is a flock of YTBC's on King, numbering around 30-40 birds, but
many of the locals commented that no-one had recorded any breeding
there for quite a few years - some felt it was since some large fires
a few years back. This is all pretty anecdotal, and others may know
of YTBCs breeding on King Is. recently, but a few of the locals were
quite concerned about how long the local flock (which doesn't seem to
migrate to either 'mainland') could last with no breeding going on.
John Tongue
Ulverstone, TAS.
On 22/05/2007, at 5:08 PM, Michael Todd wrote:
Hello all,
I've got a question with regards to Yellow-tailed Black-cockatoos
(YTBC). The work that I'm doing on Masked Owls is of necessity going
to be looking at large tree hollows and the issues associated with
retention of the same.
I've had three different people ask me about YTBC and their nesting
behaviour and success in the last week. It's made me aware that I
know very little about Black-cockatoo nesting behaviour- I've
certainly never found a YTBC nest. Nelson and Morris (1994) had some
success describing their requirements. I was just curious to see
whether anyone on birding-aus had any observations on YTBC breeding.
Ever found a nest? What about juveniles? Are birding- ausers seeing
fledged or immature YTBC? I find cockatoos interesting because they
are so long-lived- how long would it take for a lack of breeding
success to become evident?
REFERENCE
Nelson and Morris (1994) Nesting Requirements of the Yellow-tailed
Black-cockatoo, Calyptorhynchus funereus, in Eucalyptus regnans
Forest, and Implications for Forest Management, Wildlife Research,
21: 267-278.
Cheers
Mick
____________
Michael Todd
Wildlifing- Images of Nature- www.wildlifing.com
Ranelagh, Tasmania
Latest Additions: Updated Australian Mammals Gallery
Mobile: o41o 123715
Eric Finley wrote:
Hi Alan
Have watched the annual report records of this species with
interest. On
a purely local and personal level though, have definitely seen an
increase in the species' inner city occurrences. For example I
lived in
Stanmore-Leichhardt-Petersham for about 6 years to 1998 and during
that
time had only a handful of isolated sightings. I now see or hear
them in
Redfern and neighbouring suburbs several times a week on average
during
winter months, and this has been fairly consistent for the past 3
years.
During my first winter in Redfern, 2003, I did not have a single local
sighting. Certainly a welcome trend in any case - I hope it is not
indicative of a problem for the species elsewhere which is forcing
them
in on the big city!
Eric Finley
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