From Jim Hone
Stephen Ornes highlighted many aspects of the impacts and control of wild pigs (2 April, p 40). But there are probably not “23 million feral pigs in Australia”. The paper “How many are there? The use and misuse of continental-scale wildlife abundance estimates” in Wildlife Research reports with 95 per cent confidence that the number is between 3.5 million and 23.5 million, around an estimate of 13.5 million ().
Canberra, Australia
