Dickman, C. R., Australian Nature Conservation Agency, University of Sydney, & Invasive Species Program (Australia). (1996). Overview of the impacts of feral cats on Australian native fauna. Canberra, ACT: Australian Nature Conservation Agency.
In this book the authors review impact of feral cats. Feral cats have major or minor impacts on the Australian native wildlife some of which are competitive, amensal, and predatory. The Competitive impact caused by cats is on large predatory species by loss of prey. Amensal impact is most likely cause by transmission of diseases. And predatory impact on native wildlife has been identified by historical evidence. Many conclusions can be made from this evidence. Mammals make up a large part of a feral cats diet. They target mammals weighing up to 2kg, and birds up to 1kg. But they prefer prey weighing less then approximately 200grams in Mainland Australia.…show more content… Australia has the worlds worst record for extinct mammals, 28 species and sub species mostly marsupials since European explorers and settlers arrived. Most of these extinctions have been linked to feral cats and other introduced species. Cats have developed there skills over millions of years and they a fast and silent killers. The US Fish and Wildlife Service has revealed that feral and domestic cats kill an estimated 2.4 billion birds and 12.3 billion mammals each year most of which are native. No such large studies have been performed in Australia. However The Australian Wildlife Conservancy released a report, which estimated the impact of 5 to 18 million feral cats on native Australian species, such as the numbat or bilby. Each cat can potentially take from 5 to 30 animals a night. The extinction of 9 species of bird and the critical state of 33 others has been directly linked to Feral and domestic