Data Zone
The site was identified as internationally important for bird conservation in 2014 because it was regularly supporting significant populations of the species listed below, meeting ('triggering') IBA criteria.
Populations meeting IBA criteria ('trigger species') at the site:| Species | Red List | Season (year/s of estimate) | Size | IBA criteria |
|---|---|---|---|---|
| Weka Gallirallus australis | VU | resident (-) | present | A1 |
| Yellow-eyed Penguin Megadyptes antipodes | EN | resident (1932–1990) | 40–66 pairs | A1, A4ii |
| Sooty Shearwater Ardenna grisea | NT | breeding (2013) | 100,000-499,999 pairs | A4ii |
| Stewart Island Shag Leucocarbo chalconotus | VU | breeding (1911–2011) | 384–922 pairs | A1, A4i |
| A4iii Species group - seabirds | n/a | - (-) | 100,000-499,999 pairs | A4iii |
Ideally the conservation status of the IBA will have been checked regularly since the site was first identified in 2014. The most recent assessment (2014) is shown below.
| IBA conservation assessment | |||
|---|---|---|---|
| Year of assessment | State | Pressure | Response |
| 2014 | not assessed | high | not assessed |
| Whole site assessed? | State assessed by | Accuracy of information | |
| no | unset | - | |
| Pressure (threats to the trigger species and/or their habitats) | ||||
|---|---|---|---|---|
| Threat | Timing | Scope | Severity | Result |
| Invasive and other problematic species and genes | happening now | some of population/area (10–49%) | moderate decline (10–30% over 3 generations) | high |
| Human intrusions and disturbance | likely in short term (<4 years) | some of population/area (10–49%) | slow decline (1–10% over 3 generations) | medium |
| Biological resource use | happening now | some of population/area (10–49%) | no or slight decline (<1% over 3 generations) | low |
| Response (conservation actions taken for the trigger species and/or their habitats) | |||
|---|---|---|---|
| Designation | Planning | Action | Result |
| Not assessed | Not assessed | Not assessed | not assessed |
| Year | Protected Area | Designation (management category) | % coverage of IBA |
|---|---|---|---|
| 1926 | Nature Reserve - Bench Island | Nature Reserve (Ia) | 37 |
| 1958 | Whero Rock | Nature Reserve (Ia) | <1 |
| Habitat | % of IBA | Habitat detail |
|---|---|---|
| Forest | major (>10) | |
| Marine Coastal/Supratidal | major (>10) | |
| Marine Intertidal | major (>10) | |
| Shrubland | major (>10) |
Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Northern Titi Muttonbird Islands (New Zealand). Downloaded from
https://datazone.birdlife.org/site/factsheet/northern-titi-muttonbird-islands-iba-new-zealand on 23/12/2024.