John Ewen is a Research Fellow at the Institute of Zoology, Zoological Society of London and is supported by a Research Councils UK Academic Fellowship. He is currently co-leader of the New Zealand Department of Conservation's Hihi Recovery Group and is a member of the IUCN/SSC Reintroduction Specialist Group.

Doug Armstrong is the Professor of Conservation Biology at Massey University in New Zealand. He has been involved in reintroduction since 1992, and has been the Oceania Chair of the IUCN/SSC Reintroduction Specialist Group since 1997.

Kevin Parker is a post-doctoral fellow at Massey University, New Zealand. He is a member of the IUCN/SSC Reintroduction Specialist Group.

Phil Seddon is an Associate Professor at the University of Otago and Director of the Department of Zoology's Postgraduate Wildlife Management Programme. Phil has been a member of the IUCN/SSC Re-introduction Specialist Group (RSG) since 1995, and RSG Bird Section Chair since 1998.