Birds on Our Changing World

North Island robin on Tiritiri Matangi island (image A. Ballance)

Saddleback chick on Tiritiri Matangi Island (image A. Ballance)

Producer Alison Ballance with a Fiordland tokoeka (image A. Ballance)

Fairy tern nesting area (image A. Ballance)

Fairy tern egg (image A. Ballance)

Southern royal albatrosses on subantarctic Campbell Island (image A. Ballance)

Kath Walker and Graeme Elliott with a Gibson's wandering albatross chick on Adams Island, Auckland Islands (image A. Ballance)

Little blue penguin in a nest box on Matiu Somes Island (image A. Ballance)

Little blue penguin chick on Matiu Somes Island in Wellington Harbour (image A. Ballance)

Fluttering shearwater chicks are being moved to Matiu Somes Island to re-establush a new population (image A. Ballance)

Producer Alison Ballance meets the late famous takahe Greg on Tiritiri Matangi Island (image A. Ballance)

Takahe on Mana Island near Wellington (image A. Ballance)

Takahe on Mana Island, near Wellington (image A. Ballance)

Whio or blue duck live in fast-flowing rivers such as the Mangatepopo (image A. Ballance)

A 47-kilometre long predator-proof fence surrounds Maungatautari ecological island in the Waikato (image A. Ballance)

Tiritiri Matangi Island in the Hauraki Gulf has been revegetated over the last 30 years and is now an open sanctuary (image A. Ballance)

The Whakatane kiwi project looks after kiwi living in and around Whakatane's suburbs (image A. Ballance)