Human activities are destroying the natural world, leading to the extinction of animal and plant species at a terrifying rate.

Our actions threaten over one million species. And in New Zealand we have the highest proportion of threatened native species in the world, with more than 4000 at risk.

Some experts believe we are in the throes of the sixth mass extinction. In This Is How It Ends, a seven-part Stuff documentary series, Andrea Vance and Iain McGregor investigate the biodiversity crisis.

We rely on sanctuaries to keep rare species alive - but can we lock up nature forever?

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WATCH EPISODE SEVEN:
THE ISLANDS

Hit play on the video to learn why islands and fenced sanctuaries are not the future of conservation.

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Hokorereoro, Rangatira, or South East Island is the third largest island in the Chatham Islands archipelago.

Hokorereoro, Rangatira, or South East Island is the third largest island in the Chatham Islands archipelago.

The endemic Chatham Island black robin was reduced to a single breeding pair during the 1980s.

The endemic Chatham Island black robin was reduced to a single breeding pair during the 1980s.

Jemma Welch and Katelyn Whittaker-Prendeville, from the Department of Conservation, banding Chatham Petrel chicks on Rangatira.

Jemma Welch and Katelyn Whittaker-Prendeville, from the Department of Conservation, banding Chatham Petrel chicks on Rangatira.

A shore plover feeds at dusk.

A shore plover feeds at dusk.

A ruru/morepork at Orokonui Ecosanctuary, north of Dunedin.

A ruru/morepork at Orokonui Ecosanctuary, north of Dunedin.

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Hokorereoro, Rangatira, or South East Island is the third largest island in the Chatham Islands archipelago.

Hokorereoro, Rangatira, or South East Island is the third largest island in the Chatham Islands archipelago.

The endemic Chatham Island black robin was reduced to a single breeding pair during the 1980s.

The endemic Chatham Island black robin was reduced to a single breeding pair during the 1980s.

Jemma Welch and Katelyn Whittaker-Prendeville, from the Department of Conservation, banding Chatham Petrel chicks on Rangatira.

Jemma Welch and Katelyn Whittaker-Prendeville, from the Department of Conservation, banding Chatham Petrel chicks on Rangatira.

A shore plover feeds at dusk.

A shore plover feeds at dusk.

A ruru/morepork at Orokonui Ecosanctuary, north of Dunedin.

A ruru/morepork at Orokonui Ecosanctuary, north of Dunedin.

Hokorereoro, Rangatira, or South East Island is the third largest island in the Chatham Islands archipelago.

Hokorereoro, Rangatira, or South East Island is the third largest island in the Chatham Islands archipelago.

Jemma Welch and Katelyn Whittaker-Prendeville, from the Department of Conservation, banding Chatham Petrel chicks on Rangatira.

Jemma Welch and Katelyn Whittaker-Prendeville, from the Department of Conservation, banding Chatham Petrel chicks on Rangatira.

The endemic Chatham Island black robin was reduced to a single breeding pair during the 1980s.

The endemic Chatham Island black robin was reduced to a single breeding pair during the 1980s.

A shore plover feeds at dusk.

A shore plover feeds at dusk.

A ruru/morepork at Orokonui Ecosanctuary, north of Dunedin.

A ruru/morepork at Orokonui Ecosanctuary, north of Dunedin.

Item 1 of 5

Hokorereoro, Rangatira, or South East Island is the third largest island in the Chatham Islands archipelago.

Hokorereoro, Rangatira, or South East Island is the third largest island in the Chatham Islands archipelago.

Jemma Welch and Katelyn Whittaker-Prendeville, from the Department of Conservation, banding Chatham Petrel chicks on Rangatira.

Jemma Welch and Katelyn Whittaker-Prendeville, from the Department of Conservation, banding Chatham Petrel chicks on Rangatira.

The endemic Chatham Island black robin was reduced to a single breeding pair during the 1980s.

The endemic Chatham Island black robin was reduced to a single breeding pair during the 1980s.

A shore plover feeds at dusk.

A shore plover feeds at dusk.

A ruru/morepork at Orokonui Ecosanctuary, north of Dunedin.

A ruru/morepork at Orokonui Ecosanctuary, north of Dunedin.

If your biggest, strongest, tallest member of the forest family is sick, that sends a very strong message that something's not right.
Edward Ashby, Te Kawerau Iwi Tiaki Trust

A Chatham Island fantail flits across the Rangatira Island foreshore.

A Chatham Island fantail flits across the Rangatira Island foreshore.

A Rangatira spider, found on Rangatira, Houruakopara and Mangere Island.

A Rangatira spider, found on Rangatira, Houruakopara and Mangere Island.

The shore plover/tūturuatu number about 250.

The shore plover/tūturuatu number about 250.

Rangitahi Lake provides the water supply for Kaingaroa in the Chatham Islands.

Rangitahi Lake provides the water supply for Kaingaroa in the Chatham Islands.

Large-scale land clearing devastated both vegetation and native birds in the Chatham Islands.

Large-scale land clearing devastated both vegetation and native birds in the Chatham Islands.

Pitt/ Rangiauria/ Rangiaotea Island pictured from Rangatira.

Pitt/ Rangiauria/ Rangiaotea Island pictured from Rangatira.

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A Chatham Island fantail flits across the Rangatira Island foreshore.

A Chatham Island fantail flits across the Rangatira Island foreshore.

A Rangatira spider, found on Rangatira, Houruakopara and Mangere Island.

A Rangatira spider, found on Rangatira, Houruakopara and Mangere Island.

The shore plover/tūturuatu number about 250.

The shore plover/tūturuatu number about 250.

Rangitahi Lake provides the water supply for Kaingaroa in the Chatham Islands.

Rangitahi Lake provides the water supply for Kaingaroa in the Chatham Islands.

Large-scale land clearing devastated both vegetation and native birds in the Chatham Islands.

Large-scale land clearing devastated both vegetation and native birds in the Chatham Islands.

Pitt/ Rangiauria/ Rangiaotea Island pictured from Rangatira.

Pitt/ Rangiauria/ Rangiaotea Island pictured from Rangatira.

A Chatham Island fantail flits across the Rangatira Island foreshore.

A Chatham Island fantail flits across the Rangatira Island foreshore.

A Rangatira spider, found on Rangatira, Houruakopara and Mangere Island.

A Rangatira spider, found on Rangatira, Houruakopara and Mangere Island.

The shore plover/tūturuatu number about 250.

The shore plover/tūturuatu number about 250.

Rangitahi Lake provides the water supply for Kaingaroa in the Chatham Islands.

Rangitahi Lake provides the water supply for Kaingaroa in the Chatham Islands.

Large-scale land clearing devastated both vegetation and native birds in the Chatham Islands.

Large-scale land clearing devastated both vegetation and native birds in the Chatham Islands.

Pitt/ Rangiauria/ Rangiaotea Island pictured from Rangatira.

Pitt/ Rangiauria/ Rangiaotea Island pictured from Rangatira.

Item 1 of 6

A Chatham Island fantail flits across the Rangatira Island foreshore.

A Chatham Island fantail flits across the Rangatira Island foreshore.

A Rangatira spider, found on Rangatira, Houruakopara and Mangere Island.

A Rangatira spider, found on Rangatira, Houruakopara and Mangere Island.

The shore plover/tūturuatu number about 250.

The shore plover/tūturuatu number about 250.

Rangitahi Lake provides the water supply for Kaingaroa in the Chatham Islands.

Rangitahi Lake provides the water supply for Kaingaroa in the Chatham Islands.

Large-scale land clearing devastated both vegetation and native birds in the Chatham Islands.

Large-scale land clearing devastated both vegetation and native birds in the Chatham Islands.

Pitt/ Rangiauria/ Rangiaotea Island pictured from Rangatira.

Pitt/ Rangiauria/ Rangiaotea Island pictured from Rangatira.

OTHER EPISODES

Episode 1

Seabirds

Watch
now

Episode 2

Native Birds

Watch
now

Episode 3

Oceans

Watch
now

Episode 4

All creatures great and small

Watch
now

Episode 5

Fresh Water

Watch
now

Episode 6

The Endangered Forest

Watch
now
Written, filmed, produced and directed by Andrea Vance and Iain McGregor
With extra special thanks to Herb Christophers, Department of Conservation, and Madeleine Brennan
With thanks to Pomona Island Charitable Trust; Elton Smith, Orokonui Ecosanctuary; Lou Sanson, Tryphena Cracknell, Jamie Cooper, Jemma Welch, Jenna Hoverd, Miriam Ritchie, Department of Conservation; Kevin Hague, Forest & Bird; Melanie Mark-Shadbolt, Te Tira Whakamātaki; Phil Johnson, Toby Longbottom and Paula Penfold, Stuff Circuit
Additional footage supplied by Madeleine Brennan; Elton Smith, Orokonui Ecosanctuary; Pomona Island Charitable Trust; Department of Conservation; John Innes, Landcare Research
Title animation Ella Bates-Hermans
Design and layout Aaron Wood and Sungmi Kim
Development Sungmi Kim
Editor John Hartevelt
Executive editor and producer Bernadette Courtney
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