Taxonomic source(s)
Christidis, L. and Boles, W.E. 2008. Systematics and Taxonomy of Australian Birds. CSIRO Publishing, Collingwood, Australia.
del Hoyo, J., Collar, N.J., Christie, D.A., Elliott, A. and Fishpool, L.D.C. 2014. HBW and BirdLife International Illustrated Checklist of the Birds of the World. Volume 1: Non-passerines. Lynx Edicions BirdLife International, Barcelona, Spain and Cambridge, UK.
Critically Endangered | Endangered | Vulnerable |
---|---|---|
- | C2a(ii) | C1+2a(ii) |
Year | Category | Criteria |
---|---|---|
2022 | Vulnerable | C1+2a(ii) |
2018 | Critically Endangered | B2ab(ii,iii,v) |
2016 | Critically Endangered | B2ab(ii,iii,v) |
2015 | Critically Endangered | B2ab(ii,iii,v) |
2013 | Critically Endangered | B2ab(ii,iii,v) |
2012 | Critically Endangered | B2ab(ii,iii,v) |
2010 | Critically Endangered | B2a+b(ii,iii,v) |
2009 | Critically Endangered | B2a+b(ii,iii,v) |
2008 | Critically Endangered | |
2007 | Critically Endangered | |
2005 | Critically Endangered | |
2004 | Critically Endangered | |
2000 | Critically Endangered | |
1996 | Vulnerable | |
1994 | Vulnerable | |
1988 | Threatened |
Migratory status | full migrant | Forest dependency | medium |
Land-mass type | Average mass | - |
Estimate | Data quality | |
---|---|---|
Extent of Occurrence (breeding/resident) | 40 km2 | medium |
Extent of Occurrence (non-breeding) | 7,160,000 km2 | medium |
Area of Occupancy (breeding/resident) | 40 km2 | medium |
Severely fragmented? | no | - |
Estimate | Data quality | Derivation | Year of estimate | |
---|---|---|---|---|
Population size | 2400-5000,3700 mature individuals | medium | estimated | 2020 |
Population trend | decreasing | good | estimated | 1970-2025 |
Rate of change over the past 10 years/3 generations (longer of the two periods) | 22-26% | - | - | - |
Rate of change over the future 10 years/3 generations (longer of the two periods) | 5-19% | - | - | - |
Rate of change over the past & future 10 years/3 generations (longer of the two periods) | 22-26% | - | - | - |
Generation length | 18.4 years | - | - | - |
Number of subpopulations | 1 | - | - | - |
Percentage of mature individuals in largest subpopulation | 100% | - | - | - |
Population justification: There have been five estimates in the last three generations: 1,300 pairs in 1985 (Stokes 1988), 1,466±325 in 2003, 1,392±102 in 2004 (James 2014), 1,050 in 2016 and 1,200 in 2017 (J.C. Hennicke unpublished). Taking a different approach based on genetics, Morris-Pocock et al. (2012) estimated the population at 5,000 mature individuals. The best estimate of mature individuals is the mean of the two methods.
Trend justification: Historically, there were estimated to be 6,300 annual breeding pairs, but a loss of breeding habitat apparently owing to habitat clearance and dust fallout from phosphate mining, marine pollution, overfishing and bycatch in fishing gear has caused declines. Although land-based threats are no longer thought to be prevalent, declines are projected to continue principally owing to the ongoing threat of persecution by fishing activities (Macgregor et al. 2021). Surveys from 2008-2013 show an ongoing declining trend in breeding numbers (Hennicke 2014). There have been five estimates in the last three generations: 1,300 pairs in 1985 (Golf Course 850 nests, Cemetery 350, Dryers 100; Stokes 1988), 1,466±325 in 2003, 1,392±102 in 2004 (James 2014), 1,050 in 2016 and 1,200 in 2017 (J. C. Hennicke unpublished, in Macgregor et al. 2021). This species breeds biennially, so the increase between 2016 and 2017 cannot be interpreted as an increase in mature individuals. Using the five estimates of breeding pairs, there was an approximate decline of c.20-25% over the last three generations (Macgregor et al. 2021).
Country/Territory | Presence | Origin | Resident | Breeding visitor | Non-breeding visitor | Passage migrant |
---|---|---|---|---|---|---|
Australia | extant | vagrant | yes | |||
Brunei | extant | native | yes | |||
Cambodia | extant | native | yes | |||
China (mainland) | extant | native | yes | |||
Christmas Island (to Australia) | extant | native | yes | |||
Cocos (Keeling) Islands (to Australia) | extant | vagrant | yes | |||
Hong Kong (China) | extant | native | yes | |||
India | extant | vagrant | yes | |||
Indonesia | extant | native | yes | |||
Japan | extant | vagrant | yes | |||
Malaysia | extant | native | yes | |||
Philippines | extant | native | yes | |||
Singapore | extant | native | yes | |||
Sri Lanka | extant | native | yes | |||
Thailand | extant | native | yes | |||
Timor-Leste | extant | native | yes | |||
Vietnam | extant | vagrant | yes |
Country/Territory | IBA Name |
---|---|
Cambodia | Koh Tang Archipelago |
Christmas Island (to Australia) | Christmas Island |
Indonesia | Pulau Dua |
Indonesia | Pulau Rambut |
Indonesia | Ujung Kulon |
Malaysia | Bako-Buntal Bay |
Malaysia | Mantanani islands |
Malaysia | Sipadan islands |
Malaysia | Tanjung Datu-Samunsam Protected Area |
Malaysia | Tempasuk plains |
Thailand | Hat Nopharat Thara - Mu Ko Phi Phi |
Habitat (level 1) | Habitat (level 2) | Importance | Occurrence |
---|---|---|---|
Forest | Subtropical/Tropical Moist Lowland | major | breeding |
Marine Neritic | Estuaries | suitable | resident |
Marine Neritic | Macroalgal/Kelp | major | resident |
Marine Neritic | Pelagic | major | resident |
Marine Neritic | Seagrass (Submerged) | major | resident |
Marine Neritic | Subtidal Loose Rock/pebble/gravel | major | resident |
Marine Neritic | Subtidal Rock and Rocky Reefs | major | resident |
Marine Neritic | Subtidal Sandy | major | resident |
Marine Neritic | Subtidal Sandy-Mud | major | resident |
Marine Oceanic | Epipelagic (0-200m) | major | resident |
Marine Oceanic | Mesopelagic (200-1000m) | major | resident |
Altitude | 0 - 200 m | Occasional altitudinal limits | (max) 357 m |
Threat (level 1) | Threat (level 2) | Impact and Stresses | |||||||
---|---|---|---|---|---|---|---|---|---|
Agriculture & aquaculture | Annual & perennial non-timber crops - Small-holder farming | Timing | Scope | Severity | Impact | ||||
Ongoing | Minority (<50%) | Negligible declines | Low Impact: 4 | ||||||
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Biological resource use | Fishing & harvesting aquatic resources - Unintentional effects: (large scale) [harvest] | Timing | Scope | Severity | Impact | ||||
Ongoing | Whole (>90%) | Slow, Significant Declines | Medium Impact: 7 | ||||||
|
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Biological resource use | Hunting & trapping terrestrial animals - Intentional use (species is the target) | Timing | Scope | Severity | Impact | ||||
Ongoing | Majority (50-90%) | Very Rapid Declines | High Impact: 8 | ||||||
|
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Climate change & severe weather | Habitat shifting & alteration | Timing | Scope | Severity | Impact | ||||
Ongoing | Whole (>90%) | Unknown | Unknown | ||||||
|
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Climate change & severe weather | Storms & flooding | Timing | Scope | Severity | Impact | ||||
Future | Whole (>90%) | Unknown | Unknown | ||||||
|
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Energy production & mining | Mining & quarrying | Timing | Scope | Severity | Impact | ||||
Past, Unlikely to Return | Majority (50-90%) | Slow, Significant Declines | Past Impact | ||||||
|
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Invasive and other problematic species, genes & diseases | Invasive non-native/alien species/diseases - Anoplolepis gracilipes | Timing | Scope | Severity | Impact | ||||
Ongoing | Whole (>90%) | Unknown | Unknown | ||||||
|
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Pollution | Garbage & solid waste | Timing | Scope | Severity | Impact | ||||
Ongoing | Whole (>90%) | Unknown | Unknown | ||||||
|
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Pollution | Industrial & military effluents - Type Unknown/Unrecorded | Timing | Scope | Severity | Impact | ||||
Ongoing | Whole (>90%) | Unknown | Unknown | ||||||
|
Purpose | Scale |
---|---|
Food - human | subsistence, national |
Recommended citation
BirdLife International (2024) Species factsheet: Christmas Island Frigatebird Fregata andrewsi. Downloaded from
https://datazone.birdlife.org/species/factsheet/christmas-island-frigatebird-fregata-andrewsi on 23/12/2024.
Recommended citation for factsheets for more than one species: BirdLife International (2024) IUCN Red List for birds. Downloaded from
https://datazone.birdlife.org/species/search on 23/12/2024.