• Summary
• Text account
• Data table and detailed info
• Map
• Reference and further resources

The site was identified as important 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 List1	Season	Year(s)	Size	IBA criteria
Fluttering Shearwater Puffinus gavia	LC	breeding	1957-1964	min 675 nests	A4ii
Rough-faced Shag Leucocarbo carunculatus	VU	breeding	1948-2015	55-169 breeding pairs	A1, A4i

1. The current IUCN Red List category. The category at the time of the IBA criteria assessment (2014) may differ.

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.

Pressure (threats to the trigger species and/or their habitats)
Threat	Timing	Scope	Severity	Result
Invasive and other problematic species and genes	likely in long term (beyond 4 years)	some of area/population (10-49%)	moderate to rapid deterioration	medium
Human intrusions and disturbance	likely in short term (within 4 years)	small area/few individuals (<10%)	no or imperceptible deterioration	low

Response (conservation actions taken for the trigger species and/or their habitats)
Protected areas	Management plan	Other action	Result
Not assessed	Not assessed	Not assessed	not assessed

Year	Protected Area	Designation	% overlap with IBA
1965	Trio Islands	Wildlife Sanctuary	63

Habitat1	Habitat detail	% of IBA
Forest		major (>10)
Marine Coastal/Supratidal		major (>10)
Marine Intertidal		major (>10)
Shrubland		major (>10)

1. IUCN Habitat classification.

---

Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Trio Islands (New Zealand). Downloaded from https://datazone.birdlife.org/site/factsheet/trio-islands-iba-new-zealand on 23/11/2024.