I have just returned from a week's fieldwork at Ned's Corner in NW
Victoria.
While looking for megafauna bones and Aboriginal occupation sites at Little
Lake Walla Walla, we came across a deposit of small stones that were
clearly not cultural and were not a result of normal sedimentary processes.
The best explanation we could come up with was Emu gizzard stones or
gastroliths (or perhaps Genyornis gizzard stones).
I recall a paper several years ago that looked at the use of Aboriginal
stone artefacts as gizzard stones and their subsequent re-distribution
across the landscape but I am not aware any papers on gizzard stones. If
anyone knows of any gizzard stone studies, I would appreciate the
reference.
There is an inherent conflict between archaeology and bird observation but
I did manage to look up on enough occasions to see a good range of Mallee
birds including Mulga and Red-rumped Parrots, Bluebonnets, Mallee
Ringnecks, Southern Whitefaces, White-winged Fairy-wrens, Yellow- and
White-plumed, Singing and Black Honeyeaters, Grey and Pied Butcherbirds
(with overlapping territories), Black, Whistling and Black-shouldered Kites
and lots more.
Thanks
David
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