There is indeed an industry for this, but it's no where near as large as it would need to be to eliminate a significant amount of the population.
You also have the problem that the population is spread over such a large area.
* http://en.wikipedia.org/wiki/Emu_War
There is indeed an industry for this, but it's no where near as large as it would need to be to eliminate a significant amount of the population.
You also have the problem that the population is spread over such a large area.