Investigator Islands (Australia) - BirdLife IBA factsheet

Investigator Islands

Current view: Data table and detailed info

IBA Justification

The site was identified as important in 2009 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
Cape Barren Goose Cereopsis novaehollandiae	LC	resident	1979-2006	500-951 individuals	A4i
Black-faced Cormorant Phalacrocorax fuscescens	LC	resident	2001	common	A4i
Pacific Gull Larus pacificus	LC	resident	1976-2004	35 breeding pairs	A4i
Fairy Tern Sternula nereis	VU	resident	1974-1997	30 breeding pairs	A1, A4i

1. The current IUCN Red List category. The category at the time of the IBA criteria assessment (2009) may differ.

IBA Conservation

Ideally the conservation status of the IBA will have been checked regularly since the site was first identified in 2009. The most recent assessment (2008) is shown below.

IBA conservation assessment
Year of assessment	State	Pressure	Response
2008	not assessed	low	not assessed
Whole site assessed?	State assessed by	Accuracy of information
yes	unset	medium

Pressure (threats to the trigger species and/or their habitats)
Threat	Timing	Scope	Severity	Result
Human intrusions and disturbance	happening now	some of area/population (10-49%)	no or imperceptible deterioration	low
Invasive and other problematic species and genes	happening now	majority/most of area/population (50-90%)	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

IBA Protection

Year	Protected Area	Designation	% overlap with IBA
1967	Investigator Group	Wilderness Protection Area	4
1991	Waldegrave Islands	Conservation Park	7
1995	Unnamed (No.HA1003)	Heritage Agreement	6
2009	Investigator	Marine Park	7
2009	Investigator	Marine Park	3
2011	Investigator Group	Wilderness Protection Area	7

Habitats

Habitat¹	Habitat detail	% of IBA
Artificial/Terrestrial	Improved grassland & pasture	major (>10)
Shrubland	Heath, Other shrublands	major (>10)

1. IUCN Habitat classification.

Land use

Land use	% of IBA
nature conservation and research	major (>10)
rangeland/pastureland	major (>10)

Land ownership

Flinders Island is leasehold. Other islands are owned and managed by the South Australian government.

Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Investigator Islands (Australia). Downloaded from https://datazone.birdlife.org/site/factsheet/investigator-islands-iba-australia on 22/11/2024.