Yes, the YTBCs in SA, western Vic and Tas are a separate ssp, with a
shorter tail.
The most dramatic contavention of Bergman's rule in Tas are the
Magpies, which are much smaller than the mainland birds. Grey
Butcherbirds, on the other hand, are huge.
John Leonard
Sent from my iPod
On 30/03/2010, at 7:18 PM, John Tongue <> wrote:
Hi Bevan et al,
Not sure about the YTBC's, but having lived in NSW, and now in
Tassie, I'd always got the impression Platypus and Echidnas, at
least, were larger here in Tas. Maybe we all need to get out our
rulers and set-squares??
Cheers,
John Tongue
Ulverstone, Tas.
On 30/03/2010, at 4:16 PM, Evan Beaver wrote:
Hi Birders,
I've recently been walking in Tassie and spent a bit of time
examining
the YTBCs (Yellow-Tailed Black Cockatoos). Now, I did't catch any and
measure their tails, but it appeared to me the tails were generally
10-20% shorter than the YTBCs I'm familiar with from the Blue
Mountains in (much) Greater Western Sydney. Any one agree or
disagree?
Also, more generally, I thought a lot of the mammals I saw were
smaller than the mainland. Wombats and echidna in particular, and
possibly also platypus. This seems to buck the rule of thumb of 'size
generally correllates with lattitude'. An example of this is the
Sooty
Owls.
--
Evan Beaver
Downer, ACT
lat=-35.24, lon=149.15
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