John Cullen (police officer)
John Cullen was the first warden of Tongariro National Park and in 1912, he introduced heather to the park to provide cover for game birds such as grouse, which had been introduced for recreational hunting. The introduction of game birds was an attempt to attract more visitors to the park, however the grouse could not live in the climate of the area. The heather, on the other hand, thrived and is now considered a pest, with conservationists trying to eradicate it.
- Hill, Richard S. "John Cullen". Dictionary of New Zealand Biography. Ministry for Culture and Heritage. Retrieved 23 April 2017.
- "New National Highway.". New Zealand Herald. 1917-03-06. p. 6. Retrieved 2016-06-24.
- Taonga, New Zealand Ministry for Culture and Heritage Te Manatu. "Cullen, John". www.teara.govt.nz. Retrieved 2016-11-07.
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