1. Arthur Rylah Institute for Environmental Research, Department of Environment, Land, Water and Planning 123 Brown Street Heidelberg Victoria 3084 Australia
2. Vertebrate Pest Research Unit, Department of Primary Industries 1447 Forest Road Orange New South Wales 2800 Australia
3. Department of Conservation 28 North Street Palmerston North 4410 New Zealand
4. Department of Conservation 10 Sewell Street Hokitika 7810 New Zealand
5. Science and Policy Group, Department of Conservation 70 Moorhouse Avenue Christchurch 8011 New Zealand