TVNZ’s Natural History Film Unit was founded in Dunedin around 1977. The first Wild South documentaries began filming a year later. The slot's initial focus was on New Zealand’s perilously endangered birds, eg the Chatham Island black robin (then the world’s rarest bird). The results won local and international notice, and a loyal audience. Wildtrack was a sister series showcasing natural history for young viewers. Wild South ended in 1997 when the Natural History Unit was purchased by Fox Studios; it later became internationally successful production company NHNZ.

Packed with creatures and landscapes that quite simply boggle the mind, the Nature Collection showcases New Zealand's impressive menagerie of nature and wildlife films. Many of the titles were made by powerhouse company NHNZ, which began around 1977 as the Natural History Unit, a small, southern outpost of state television. In this backgrounder, Peter Hayden — who had a hand in more than a few of these classic films — guides viewers through just what the Nature Collection has to offer.

When the takahē was rediscovered in the Murchison mountains in 1948, it made world headlines as a back from extinction story. This documentary checks in on the big flightless birds three decades later, with their future under threat (by deer, stoats and breeding failure). Doctor Geoffrey Orbell recalls the 1948 expedition. Project Takahē was the first Wild South documentary made by TVNZ’s Natural History Unit (later NHNZ). The images of takahē – blue, green and red, plodding in the snowy tussock – marked the first time most New Zealanders had seen the bird in the wild.    

In the mid 1970s the Chatham Island black robin was the world's rarest bird. With only two females left, the conservation ante was extreme. Enter saviour Don Merton and his Wildlife Service team. Their pioneering efforts ranged from abseiling the birds (including the talismanic Eve of her species, 'Old Blue') down cliff faces, to left-field libido spurs. This 1988 Listener Film & TV award-winner united two earlier Wild South docos and updated the robin’s rescue story to 1987. It originally screened on Christmas Day 1987; and was reversioned for this 1989 edition.

This film tells the story of the world’s rarest wading bird, the black stilt (kakī). With its precise beak and long pink legs the stilt is superbly adapted to the stony braided riverbeads of the McKenzie Country, but it is tragically unable to deal with new threats (rats, ferrets, habitat loss). An early doco for TVNZ’s Natural History Unit, the magnificently filmed drama of the stilt’s struggle for survival makes it “stand out as a classic of its genre” (Russell Campbell). It won the Gold Award at New York’s International Film & TV Festival (1984).

This documentary, made by TVNZ’s Natural History Unit (now NHNZ), charts the progress of the nor'west wind from its formation in the Tasman Sea across the Southern Alps to the Canterbury Plains and the east coast of the South Island. Along the way it dumps metres of precipitation on West Coast rain forest and snow on the Alps, then transforms to a dry, hot wind racing across the Plains. The film shows the wind's impact on the ecosystem and farming and muses on the mysterious effect it can have on humans. It screened as part of the beloved Wild South series.  

The remote Antipodes Islands lie 860 kilometres southeast of Stewart Island. This 1980 documentary follows a Wildlife Service team surveying the islands’ inhabitants who are making all the strange noises – fur seals, albatrosses, petrels, parakeets and snipe, elephant seals and prolific penguins. It also investigates threats to their survival: mice and overfishing in the southern ocean. Winner of a Silver Medal at New York's International Film and Television Festival, this early Wild South episode helped establish the reputation of TVNZ’s Natural History Unit (later NHNZ).

From Māori myth to climbing and photography, to gliding and paraponting around its peak, Aoraki-Mt Cook is vividly captured in all its moods in this award-winning NHNZ portrait. Filmed for the centenary of the first ascent of a mountain that has claimed over 100 lives, it follows mountaineers as they climb toward the summit, re-enacting Tom Fyfe's pioneering pre-crampon route. Climbers, including Edmund Hillary, reminisce about encounters with NZ's highest and most iconic peak; and Bruce Grant takes the quick way down: a vertiginous ski descent.

Flightless and nocturnal, the kākāpō is the world's heaviest parrot. By the 1970s the mysterious, moss-coloured bird was facing extinction, "evicted" to Fiordland mountains and Stewart Island by stoats and cats. Thanks to special night vision equipment, this documentary captured for the first time the bird's idiosyncratic courtship rituals, and the first chick found in a century. Marking the directing debut of NHNZ veteran Rod Morris, the film screened on series two of Wild South. It was a runner-up for Best Film at a major international wildlife festival in the US city of Missoula.

The Southern Alps contain some of the youngest mountains in the world. In this NHNZ documentary awesome four seasons footage and sound design evoke the the tenuous richness of life in the vast, geologically dynamic landscape. Garrulous kea (the world’s only mountain parrot), Himalayan thar, “snow thrush” (crickets) and Mount Cook buttercup (the world’s largest) exist in a world of thundering avalanches and creaking glaciers. The classically filmed doco won a Merit Award at the 1993 International Wildlife Film Festival, Missoula.