Year of most recent IBA criteria assessment: 2009
Populations of IBA trigger speciesSpecies | Current IUCN Red List Category | Season | Year(s) of estimate | Population estimate | IBA Criteria Triggered |
---|---|---|---|---|---|
Laysan Duck Anas laysanensis | CR | resident | 2005 | 631 mature individuals | A1, A2, A4i |
Red-tailed Tropicbird Phaethon rubricauda | LC | breeding | 1984 | 9,200 breeding pairs | A4ii |
Tristram's Storm-petrel Hydrobates tristrami | LC | breeding | 1984 | 5,500 breeding pairs | A1, A4ii |
Black-footed Albatross Phoebastria nigripes | NT | breeding | 2007 | 55,900 breeding pairs | A1, A4ii |
Laysan Albatross Phoebastria immutabilis | NT | breeding | 2007 | 617,000 breeding pairs | A1, A4ii |
Bonin Petrel Pterodroma hypoleuca | LC | breeding | 2007 | 315,000 breeding pairs | A4ii |
Wedge-tailed Shearwater Ardenna pacifica | LC | breeding | 1984 | 225,000 breeding pairs | A4ii |
Christmas Shearwater Puffinus nativitatis | LC | breeding | 1984 | 2,700 breeding pairs | A4ii |
Bulwer's Petrel Bulweria bulwerii | LC | breeding | 1984 | 90,000 breeding pairs | A4ii |
Great Frigatebird Fregata minor | LC | breeding | 1984 | 9,900 breeding pairs | A4ii |
Red-footed Booby Sula sula | LC | breeding | 1984 | 7,900 breeding pairs | A4ii |
Masked Booby Sula dactylatra | LC | breeding | 1984 | 1,700 breeding pairs | A4ii |
Pacific Golden Plover Pluvialis fulva | LC | non-breeding | 2000 | 1,992 individuals | A4i |
Bristle-thighed Curlew Numenius tahitiensis | NT | non-breeding | 2004 | 800 individuals | A1, A4i |
Ruddy Turnstone Arenaria interpres | LC | non-breeding | 2000 | 3,478 individuals | A4i |
Brown Noddy Anous stolidus | LC | breeding | 1984 | 75,000 breeding pairs | A4i |
Black Noddy Anous minutus | LC | breeding | 1984 | 13,000 breeding pairs | A4i |
Blue Noddy Anous ceruleus | LC | breeding | 1984 | 3,500 breeding pairs | A4i |
Common White Tern Gygis alba | LC | breeding | 1984 | 11,000 breeding pairs | A4i |
Sooty Tern Onychoprion fuscatus | LC | breeding | 1984 | 1,500,000 breeding pairs | A4i |
Grey-backed Tern Onychoprion lunatus | LC | breeding | 1984 | 43,000 breeding pairs | A4i |
Millerbird Acrocephalus familiaris | CR | resident | 2007 | 481-1,147 males | A1, A2 |
Laysan Finch Telespiza cantans | VU | resident | 1968-1990 | 5,000-20,000 mature individuals | A1, A2 |
Nihoa Finch Telespiza ultima | CR | resident | 2007 | 2,060-3,550 mature individuals | A1, A2 |
A4iii Species group - waterbirds | n/a | breeding | 1984-2005 | 1,570,000 breeding pairs | A4iii |
A4iii Species group - seabirds | n/a | breeding | 1984-2007 | 1,338,500 breeding pairs | A4iii |
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
Most recent IBA monitoring assessment | |||
---|---|---|---|
Year of assessment | Threat score (pressure) | Condition score (state) | Action score (response) |
2009 | medium | not assessed | high |
Was the whole site covered? | Yes | State assessed by | unset |
Accuracy of information | - |
Threats to the site (pressure) | |||||
---|---|---|---|---|---|
Threat Level 1 | Threat Level 2 | Timing | Scope | Severity | Result |
Biological resource use | fishing & harvesting aquatic resources - unintentional effects: large scale | happening now | some of area/population (10-49%) | slow but significant deterioration | medium |
Biological resource use | fishing & harvesting aquatic resources - unintentional effects: subsistence/small scale | past (and unlikely to return) and no longer limiting | whole area/population (>90%) | slow but significant deterioration | low |
Climate change and severe weather | storms and floods | likely in long term (beyond 4 years) | some of area/population (10-49%) | moderate to rapid deterioration | medium |
Invasive and other problematic species and genes | invasive non-native/alien species/diseases - named species | happening now | some of area/population (10-49%) | slow but significant deterioration | medium |
Pollution | industrial & military effluents - type unknown/unrecorded | happening now | some of area/population (10-49%) | slow but significant deterioration | medium |
Conservation actions taken at site (response) | |||
---|---|---|---|
Conservation Designation | Management Planning | Conservation Action | Result |
Whole area of site (>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 | Substantive conservation measures are being implemented but these are not comprehensive and are limited by resources and capacity | high |
Protection status:
Protected Area | Designation | Area (ha) | Relationship with IBA | Overlap with IBA (ha) |
---|---|---|---|---|
Pearl And Hermes Reef | Research Natural Area | 772 | protected area contained by site | 0 |
Pearl And Hermes Reef | Research Natural Area | 37,620 | protected area contained by site | 0 |
Papahānaumokuākea Marine National Monument | Marine National Monument | 150,887,000 | protected area contains site | 34,136,200 |
Papahānaumokuākea | World Heritage Site (natural or mixed) | 36,207,500 | protected area overlaps with site | 36,206,100 |
Nihoa Island | Research Natural Area | 71 | protected area contained by site | 0 |
Necker Island | Research Natural Area | 19 | protected area contained by site | 0 |
Midway Atoll | National Wildlife Refuge | 236,530 | protected area contained by site | 0 |
Lisianski Island | Research Natural Area | 154 | protected area contained by site | 0 |
Laysan Island | Research Natural Area | 707 | protected area contained by site | 0 |
Hawaiian Islands | National Wildlife Refuge | 726 | protected area contained by site | 0 |
Gardner Pinnacles | Research Natural Area | 3 | protected area contained by site | 0 |
French Frigate Shoals | Research Natural Area | 43,063 | protected area contained by site | 0 |
Recommended citation
BirdLife International (2021) Important Bird Areas factsheet: Northwestern Hawaiian Islands. Downloaded from
http://www.birdlife.org on 19/01/2021.