Mainland islands aim to protect and restore habitats on the mainland of New Zealand through intensive management of introduced pests. They are called mainland "islands" because they are defined areas that are isolated by fencing, geographical features or, more commonly, intensive management of pests. Mainland islands require constant monitoring to check the effectiveness of management.
There are five major mainland islands that are managed by DOC. All have uniquely different ecosystems.
Map of DOC's five mainland islands
Get general information about the mainland island concept. Mainland islands are areas where species and ecosystems are protected by intensively managing pests.
Boundary Stream Mainland Island, located on the eastern flanks of the Maungaharuru Range, is home to a number of threatened native species.
Paengaroa Mainland Island is situated on the banks of the Hautapu River, near the settlement of Mataroa, in the Central North Island.
Rotoiti Nature Recovery Project comprises approximately 5000 hectares of predominantly red, silver and mountain beech forest. Learn about the project's conservation goals and achievements.
The Te Urewera Mainland Island (TUMI) was implemented in the northern end of Te Urewera National Park in 1996.
Located in Northland, Trounson Kauri Park Mainland Island comprises 586 hectares of old growth kauri and regenerating broadleaf forest, and some farmland.
Other conservation groups run similar mainland island projects:
Phone 0800 DOC HOTline (0800 362 468) 24 hour emergency number to report:
Sick or injured wildlifeWhale or dolphin strandings