About the Authors

Matthew L. Brien

matthew_brien@hotmail.com

Affiliations Research Institute for the Environment and Livelihoods, Charles Darwin University, Darwin, NT, Australia, Wildlife Management International Pty. Limited, Karama, NT, Australia

Grahame J. Webb

Affiliations Research Institute for the Environment and Livelihoods, Charles Darwin University, Darwin, NT, Australia, Wildlife Management International Pty. Limited, Karama, NT, Australia

Keith McGuinness

Affiliation Research Institute for the Environment and Livelihoods, Charles Darwin University, Darwin, NT, Australia

Keith A. Christian

Affiliation Research Institute for the Environment and Livelihoods, Charles Darwin University, Darwin, NT, Australia

Competing Interests

Authors Matthew L. Brien and Grahame J. Webb are employed by a commercial company Wildlife Management International Pty. Limited. There are no patents, products in development or marketed products to declare. This does not alter the authors' adherence to PLOS ONE policies on sharing data and materials.

Author Contributions

Conceived and designed the experiments: MB GW KC. Performed the experiments: MB. Analyzed the data: MB GW KM KC. Contributed reagents/materials/analysis tools: MB GW KM KC. Wrote the paper: MB GW KM KC.