Capricornia Cays

IBA Criteria

Year of most recent IBA criteria assessment: 2009

Populations of IBA trigger species
Species Current IUCN Red List Category Season Year(s) of estimate Population estimate IBA Criteria Triggered
Wedge-tailed Shearwater Ardenna pacifica LC resident 1985-2002 560,000 nests A4ii
Brown Booby Sula leucogaster LC resident 1983-1990 1,000-4,000 nests A4ii
Black Noddy Anous minutus LC resident 1985-2002 300,000 nests A4i

Note: This table presents the IBA criteria triggered and the species that triggered then at the time of assessment, the current IUCN Red List category may vary from that which was in place at that time.

For more information about the IBA assessment process and criteria please click here

IBA Monitoring

Most recent IBA monitoring assessment
Year of assessment Threat score (pressure) Condition score (state) Action score (response)
2008 high not assessed not assessed
Was the whole site covered? Yes State assessed by unset
Accuracy of information medium

Threats to the site (pressure)
Threat Level 1 Threat Level 2 Timing Scope Severity Result
Climate change and severe weather storms and floods likely in long term (beyond 4 years) whole area/population (>90%) moderate to rapid deterioration high
Human intrusions and disturbance recreational activities happening now some of area/population (10-49%) no or imperceptible deterioration low
Invasive and other problematic species and genes invasive non-native/alien species/diseases - named species happening now some of area/population (10-49%) moderate to rapid deterioration high

Conservation actions taken at site (response)
Conservation Designation Management Planning Conservation Action Result
Not assessed Not assessed Not assessed not assessed
For more information about IBA monitoring please click here

IBA Protection

Protection status:

Protected Area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)
Great Barrier Reef World Heritage Site 34,870,000 protected area contains site 241
Capricornia Cays National Park (Scientific) 44 protected area overlaps with site 34
Capricornia Cays National Park 180 protected area contained by site 178


IUCN Habitat Habitat detail Extent (% of site)
Coastline Sand cays, islets & bars -
For further information about the habitat classification please click here.

Land use

Land-use Extent (% of site)
nature conservation and research -
tourism/recreation -
For further information about the land use classification please click here.

Land ownership
Australian Federal Government with management the responsibility of the Great Barrier Reef Marine Park Authority.

Recommended citation
BirdLife International (2019) Important Bird Areas factsheet: Capricornia Cays. Downloaded from on 18/09/2019.