Dr John Ewen

Recovery Group Co-Chair

Science Advisor

I have been interested and working with hihi since I was involved with establishing the Tiritiri Matangi island population through translocation in 1995. I am now employed as a Research Fellow at the Zoological Society of London and have been here since 2004. My research is multi-disciplinary and focusses on small population biology and management. I use decision science to assist in planning hihi management and drive our applied research with this species and have experience in molecular and behavioural ecology, wildlife health and nutrition and reintroduction biology.

  • Posts: 16
  • Comments: 0
  • Member since:
  • Website: http://www.hihiconservation.com
  • Affiliation: Zoological Society of London
  • Address: Institute of Zoology, Zoological Society of London, Regents Park, NW1 4RY, London, UK

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  • BBC

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    Animals: tamed, exploited and resurrected

    Listen here: BBC Radio 4 – Start the Week Amol Rajan discusses the uneasy interaction between the animal kingdom and humans. The anthropologist Alice Roberts looks back to the moment hunter-gatherers changed their relationship with other species and began to tame them, paving the way for our civilisation. Gaia Vince visits the Pacific Coast of Costa […]

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    Is individual variation relevant to population dynamics?

    Marsden Fund Success! What is the optimal level of complexity to consider when predicting population dynamics? The conventional wisdom is to keep models as simple as possible. However, the recent explosion of research on individual variation in animal personalities and life history traits is increasing our capacity to generate complex individual-based models of population dynamics. […]

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  • Screen Shot 2017-11-08 at 11.56.54

    Posted in:

    Animals: tamed, exploited and resurrected

     Listen here: BBC Radio 4 – Start the Week Amol Rajan discusses the uneasy interaction between the animal kingdom and humans. The anthropologist Alice Roberts looks back to the moment hunter-gatherers changed their relationship with other species and began to tame them, paving the way for our civilisation. Gaia Vince visits the Pacific Coast of Costa […]

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    Post-release effects in reintroduced populations

    Using Bayesian mark-recapture modelling to quantify the strength and duration of post-release effects in reintroduced populations. Published in: Biological Conservation Authors: Doug Armstrong (1), Christie Le Coeur (2), Joanne M. Thorne (1), Julia Panfylova (1), Tim G. Lovegrove (3), Peter G.H. Frost (4) and John G. Ewen (5) (1) Wildlife Ecology Group, Massey University, PB 11222, Palmerston North, New Zealand (2) Centre […]

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  • Environmental-DNA-cover

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    Post-release effects in reintroduced populations

    Published in: Biological Conservation Authors: Doug Armstrong (1), Christie Le Coeur (2), Joanne M. Thorne (1), Julia Panfylova (1), Tim G. Lovegrove (3), Peter G.H. Frost (4) and John G. Ewen (5) (1) Wildlife Ecology Group, Massey University, PB 11222, Palmerston North, New Zealand (2) Centre d’Ecologie et des Sciences de la Conservation, Sorbonne Universités, MNHN, CNRS, UPMC, Paris, France (3) Auckland […]

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    New hihi colony established at Rotokare in Taranaki

    One of New Zealand’s rarest bush birds, the hihi or stitchbird, has returned to Taranaki after 130 years. Forty hihi were released into the bush at Rotokare Scenic Reserve near Eltham on Sunday, sanctuary manager Simon Collins said. The birds, 20 males and 20 females, were translocated from Tiritiri Matangi in the Hauraki Gulf. Full article […]

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    Bringing species back, New Zealand style

    In the heart of New Zealand’s Waikato region, rising out of a sea of gently rolling pastoral farmland, is an imposing remnant of ancient forest that draws you in. Maungatautari Mountain. Recently, Leila Walker had the good fortune of exploring Maungatautari’s slopes intent on tracking down hihi. She shares her experience in this blog for the Journal of Animal […]

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    A Comparison of Disease Risk Analysis Tools for Conservation Translocations

    Published in: Ecohealth Authors: Antonia Eleanor Dalziel (1,2), Anthony W. Sainsbury (1), Kate McInnes (3), Richard Jakob-Hoff (4), and John G. Ewen (1) (1) Institute of Zoology, Zoological Society of London, London UK (2) Royal Veterinary College, London, UK (3) Department of Conservation, Conservation House – Whare Kaupapa Atawhai, Wellington, New Zealand (4) New Zealand Centre for Conservation Medicine, Auckland, New Zealand Abstract: Conservation translocations are increasingly used […]

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  • Screen Shot 2016-08-01 at 11.44.34

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    Post-release effects on reintroduced populations of hihi

    Published in: The Journal of Wildlife Management Date published: May 2016 Authors: Julia Panfylova, Ellis Bemelmans, Chris Devine, Peter Frost, Doug Armstrong Abstract Modeling survival of reintroduced populations is critical for understanding population dynamics and therefore making appropriate management decisions. We analyzed survival data collected over the first 2 years after a reintroduction of hihi (Notiomystis cincta), an […]

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