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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 List	Season (year/s of estimate)	Size	IBA criteria
Lesser Frigatebird Fregata ariel	LC	resident (1980–2002)	700–1,660 nests	A4ii
Brown Booby Sula leucogaster	LC	resident (1980–2002)	3,700–16,000 nests	A4ii
Masked Booby Sula dactylatra	LC	resident (1980–2002)	700–2,500 nests	A4ii
Brown Noddy Anous stolidus	LC	resident (1980–2002)	50,000 birds	A4i
Black Noddy Anous minutus	LC	resident (1980–2002)	50,000 birds	A4i

Ideally the conservation status of the IBA will have been checked regularly since the site was first identified in 2009. The most recent assessment (2019) 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	likely in long term (>4 years)	whole of popul­ation/area (>90%)	moderate decline (10–30% over 3 gener­ations)	high
Other	happe­ning now	some of popul­ation/area (10–49%)	slow decline (1–10% over 3 gener­ations)	medium
Human intrusions and disturbance	happe­ning now	most of popul­ation/area (50–90%)	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
Whole area (>90%) covered by appropriate conservation designation	A compre­hensive and appropriate management plan exists that aims to maintain or improve the populations of qualifying bird species	The conservation measures needed for the site are being compre­hensively and effectively implemented	high

Year	Protected Area	Designation (management category)	% coverage of IBA
1981	Great Barrier Reef	World Heritage Site (natural or mixed) (UA)	100
2004	Great Barrier Reef	Marine Park (II)	92
2004	Great Barrier Reef Coast	Marine Park (II)	92
2007	Raine Island	National Park (Scientific) (Ia)	100
2014	Raine Island	National Park (Scientific) (Ia)	3

Habitat	% of IBA	Habitat detail
Marine Coastal/Supratidal	100

Land use	% of IBA
nature conservation and research	100

Australian Federal Government with management the responsibility of the GBRMPA.

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Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Raine Island, Moulter and Maclennan Cays (Australia). Downloaded from https://datazone.birdlife.org/site/factsheet/raine-island-moulter-and-maclennan-cays-iba-australia on 23/12/2024.