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

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'):

Species	Current IUCN Red List Category	Season	Year(s)	Population estimate at site	IBA criteria met
Cape Barren Goose Cereopsis novaehollandiae	LC	resident	1989-2007	500 individuals	A4i
Tasmanian Native-hen Tribonyx mortierii	LC	resident	1998-2008	present	A2, A3
Short-tailed Shearwater Ardenna tenuirostris	LC	resident	1995	1,309,169-1,343,618 breeding pairs	A4ii
Black-faced Cormorant Phalacrocorax fuscescens	LC	resident	1999	190 breeding pairs	A4i
Sooty Oystercatcher Haematopus fuliginosus	LC	resident	1982-1999	202 breeding pairs	A4i
Pacific Gull Larus pacificus	LC	resident	1995	205 breeding pairs	A4i
Green Rosella Platycercus caledonicus	LC	resident	1998-2008	present	A2, A3
Orange-bellied Parrot Neophema chrysogaster	CR	non-breeding	2008	present	A1, A3
Black-headed Honeyeater Melithreptus affinis	LC	resident	1998-2008	present	A2, A3
Yellow-throated Honeyeater Nesoptilotis flavicollis	LC	resident	1998-2008	present	A2, A3
Tasmanian Scrubwren Sericornis humilis	LC	resident	1998-2008	present	A2, A3
Scrubtit Acanthornis magna	LC	resident	1998-2008	present	A2, A3
Tasmanian Thornbill Acanthiza ewingii	LC	resident	1998-2008	present	A2
Black Currawong Strepera fuliginosa	LC	resident	1998-2008	present	A2, A3
Dusky Robin Melanodryas vittata	VU	resident	1998-2008	present	A2, A3

The current IUCN Red List category may differ from that which was valid at the time of IBA criteria assessment (2009).

Pressure (threats to the trigger species and/or their habitats)
Threat level 1	Threat level 2	Timing	Scope	Severity	Result
Agricultural expansion and intensification	livestock farming and ranching (includes forest grazing) - agro-industry grazing, ranching or farmin	happening now	some of area/population (10-49%)	slow but significant deterioration	medium
Biological resource use	fishing & harvesting aquatic resources - unintentional effects: large scale	happening now	some of area/population (10-49%)	no or imperceptible deterioration	low
Biological resource use	hunting & collecting terrestrial animals - intentional use (species being assessed is the target)	happening now	small area/few individuals (<10%)	no or imperceptible deterioration	low
Invasive and other problematic species and genes	invasive non-native/alien species/diseases - named species	happening now	small area/few individuals (<10%)	slow but significant deterioration	low
Natural system modifications	fire & fire suppression - trend unknown/unrecorded	happening now	majority/most of area/population (50-90%)	slow but significant deterioration	high

Response (conservation actions taken for the trigger species and/or their habitats)
Protected-area designation	Management planning	Other conservation action	Result
Not assessed	Not assessed	Not assessed	not assessed

For more information about IBA conservation status, please click here

Protected area (PA)	PA designation	PA area (ha)	Relationship of PA with IBA	Overlap of PA with IBA (ha)
Three Hummock Island	State Reserve	7,202	protected area contained by site	7,284
Stack Island	Game Reserve	38	protected area overlaps with site	30
Seacrow Islet	Conservation Area	5	protected area overlaps with site	0
Penguin Islet	Nature Reserve	4	protected area overlaps with site	3
Nares Rocks	Conservation Area	3	protected area overlaps with site	0
Little Trefoil	Conservation Area	2	protected area overlaps with site	0
Hunter Island	Conservation Area	7,331	protected area contained by site	7,330
Henderson Islets	Conservation Area	3	protected area overlaps with site	0
Harbour Islets	Conservation Area	13	protected area overlaps with site	0
Bird Island	Game Reserve	59	protected area overlaps with site	65

Habitat (IUCN level 1)	Habitat detail	Extent (% of site)
Artificial/Terrestrial	Improved grassland & pasture	-
Forest	Eucalypt open forests	-
Grassland	Tussock grasslands	-
Shrubland	Closed shrublands & low closed woodlands	-
Marine Coastal/Supratidal		-

For more information about the IUCN Habitat classification, please click here.

Land-use	Extent (% of site)
nature conservation and research	-
rangeland/pastureland	-
other	-

The Doughboys, Three Hummock and Penguin Islands are Nature Reserves; Steep Island and Trefoil Island are owned by the Tasmanian Aboriginal community; Hunter Island is a Conservation Area with a private pastoral lease; Stack Island, Bird Island and others are Game Reserves.

---

Recommended citation
BirdLife International (2023) Important Bird Area factsheet: Hunter Island Group. Downloaded from http://datazone.birdlife.org/site/factsheet/hunter-island-group-iba-australia on 04/10/2023.