I certainly have never seen a YTBC nest, but I have seen begging juveniles
(usually in coastal heath around Wollongong, but also at Barren Grounds) but
HANZAB says they are fed for up to 4 months after fledging so this is
probably not surprising. I think they nest in the tall forest country on the
tablelands where there are far fewer birders, and then come to coastal areas
post breeding.
I know there are similar thoughts about Glossy Black-cockatoos on the South
Coast of NSW. GBC are a threatened species and I reckon I probably see them
as trios (mum, dad and this years young) but I know the Southern NPWS people
reckon they had less than ten nesting records (when they have over 1500
sightings). This means that when nest sites are found on development sites,
the importance of the site (like when owl nest or roost sites are found)
goes up dramatically (and for those who know about planning the impact of
the dvelopment is strongly argued as significant). Yet I think they do breed
fairly regularly, and I suspect both these species must be very cautious
around the nest (as opposed to at other times when they are fairly obvious
large birds).
Cheers,
Peter
From: Michael Todd <>
Reply-To:
To: Eric Finley <>
CC:
Subject: [Birding-Aus] Yellow-tailed Black-cockatoo breeding
Date: Tue, 22 May 2007 17:08:30 +1000
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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