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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
Torresian Imperial-pigeon Ducula spilorrhoa	LC	resident	1979-2002	24,397 breeding pairs	A4ii
Grey-tailed Tattler Tringa brevipes	LC	non-breeding	1985-1999	1,150 individuals	A4i
Bridled Tern Onychoprion anaethetus	LC	resident	1982-1992	6,000 nests	A4i
Roseate Tern Sterna dougallii	LC	resident	1982-1992	6,000 nests	A4i
Lesser Crested Tern Thalasseus bengalensis	LC	resident	1982-1992	1,000 nests	A4i

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 (2008) is shown below.

Pressure (threats to the trigger species and/or their habitats)
Threat	Timing	Scope	Severity	Result
Climate change and severe weather	likely in long term (beyond 4 years)	whole area/population (>90%)	moderate to rapid deterioration	high
Human intrusions and disturbance	happening now	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
1981	Great Barrier Reef	World Heritage Site (natural or mixed)	100
1999	Denham Group	National Park	30
2004	Great Barrier Reef	Marine Park	66
2004	Great Barrier Reef Coast	Marine Park	66
2004	Great Barrier Reef Coast	Marine Park	26
2004	Great Barrier Reef	Marine Park	26
2010	Sir Charles Hardy Group	National Park	61
2010	Saunders Islands	National Park	9

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

1. IUCN Habitat classification.

Land use	% of IBA
nature conservation and research	100

Commonwealth Government with management the responsibility of the GBRMPA.

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Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Cape York to Cape Grenville Islands (Australia). Downloaded from https://datazone.birdlife.org/site/factsheet/cape-york-to-cape-grenville-islands-iba-australia on 23/11/2024.