Argument: Sterilization is not an effective response to Kangaroo over-population
Emeritus Professor Gordon Grigg - University of Queensland. "Kangaroos on defence lands - another view". March 18th, 2008 - "Sterilisation has also been suggested, and that is worth considering proactively, when a population is small, in order to head off the problem before it arises. Sterilisation is a waste of time once the population is large enough to be causing land degradation, because the sterilised individuals will still be there continuing to feed for years to come. Perhaps some selective sterilisation would be worth considering in Canberra after the culling has reduced the numbers sufficiently." Without culling, sterilization is ineffective to help prevent the problem kangaroos pose in Australia.