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The site was identified as internationally important for bird conservation 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	non-breeding	-	450–1,000 birds	A4i
Chestnut Teal Anas castanea	LC	non-breeding	-	1,000–2,000 birds	A4i
Tasmanian Native-hen Tribonyx mortierii	LC	resident	1998–2008	common	A2, A3
Hooded Plover Thinornis cucullatus	VU	resident	1994	29–94 birds	A1
Green Rosella Platycercus caledonicus	LC	resident	1998–2008	uncommon	A2, A3
Yellow Wattlebird Anthochaera paradoxa	LC	resident	1998–2008	abundant	A2, A3
Striated Fieldwren Calamanthus fuliginosus	LC	resident	1998–2008	abundant	A3
Tasmanian Scrubwren Sericornis humilis	LC	resident	1998–2008	abundant	A2, A3
Black Currawong Strepera fuliginosa	LC	resident	1998–2008	common	A2, A3
Flame Robin Petroica phoenicea	LC	non-breeding	1998–2008	common	A1, A3

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

Ideally the conservation status of the IBA will have been checked regularly since the site was first identified in 2009. The most recent assessment (2020) is shown below.

State (condition of the trigger species' habitats)
Habitat	Quantity (% remaining)	Quality (% carrying capacity)	Result
Marine Coastal/Supratidal	good (> 90%)	good (> 90%)	good

Pressure (threats to the trigger species and/or their habitats)
Threat	Timing	Scope	Severity	Result
Climate change and severe weather	now	whole of population/area (>90%)	moderate decline (10-30% over 3 gener­ations)	very high
Agricultural expansion and intensification	now	most of population/area (50-90%)	slow decline (1-10% over 3 gener­ations)	high
Energy production and mining	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
Some of area covered (10-49%)	Unknown	Very little or no conservation action taking place	very low

Year	Protected Area	Designation	% overlap with IBA
1976	Cape Portland	Private Sanctuary	13
1999	Musselroe Bay	Conservation Area	9
1999	Mount William	National Park	8
2002	Eddystone Point Lighthouse	Historic Site	<1
2012	Cape Portland	Conservation Area	3
2012	Lighthouse Point	Conservation Area	<1

Habitat	% of IBA	Habitat detail
Artificial/Terrestrial	major (>10)	Improved grassland & pasture
Marine Coastal/Supratidal	major (>10)
Grassland	minor (<10)	Tussock grasslands
Introduced vegetation	minor (<10)
Marine Intertidal	minor (<10)

Land use	% of IBA
rangeland/pastureland	major (>10)
nature conservation and research	major (>10)
energy production and mining	minor (<10)

Private land on most of inland Cape Portland, some classified as 'private reserve', remaining area is in protected areas.

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Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Cape Portland (Australia). Downloaded from https://datazone.birdlife.org/site/factsheet/cape-portland-iba-australia on 03/12/2024.