The roos have been grazing near one of the reservoirs that supply the drought hit city with water, and there are fears they could harm water quality.

Protestors want tourists to stop coming to Australia to show support for the kangaroos, one of the country's most recognized symbols.

Over three million kangaroos are killed for meat and leather each year.

The cull began in secret on Sunday, but was postponed to allow the protestors to speak to government experts.