Shotguns sure seem to be the preferred choice in OZ for fox. The 22 Hornet, 17 Ackley Hornet and the 17HMR when it came along were always my first choices for them.
Many years ago I bought several of the traditional OZ fox whistles, and Andre Georgescu's expensive verison (as well as his fox whistling DVD) through friends there. Sent some of the buttons to fox hunting friends in Scotland, England, New Zealand and MD who had success with them... have used them myself as well with success. They don't carry very far in the wind, but they do work for fox, bobcat and coyotes.
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