Taxonomic note
Esacus magnirostris (del Hoyo and Collar 2014) was previously listed as E. giganteus; the name magnirostris has priority.
Taxonomic source(s)
Christidis, L. and Boles, W.E. 2008. Systematics and taxonomy of Australian birds. CSIRO Publishing, Collingwood, Australia.
Christidis, L.; 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. Lynx Edicions BirdLife International, Barcelona, Spain and Cambridge, UK.
del Hoyo, J.; Collar, N. J.; Christie, D. A.; Elliott, A.; Fishpool, L. D. C. 2014. HBW and BirdLife International Illustrated Checklist of the Birds of the World. Barcelona, Spain and Cambridge UK: Lynx Edicions and BirdLife International.
Critically Endangered | Endangered | Vulnerable |
---|---|---|
- | - | - |
Year | Category | Criteria |
---|---|---|
2016 | Near Threatened | C1 |
2013 | Near Threatened | C1 |
2012 | Near Threatened | C1 |
2008 | Near Threatened | C1 |
2006 | Near Threatened | |
2004 | Near Threatened | |
2000 | Lower Risk/Near Threatened | |
1994 | Lower Risk/Least Concern | |
1988 | Lower Risk/Least Concern |
Migratory status | not a migrant | Forest dependency | Does not normally occur in forest |
Land mass type |
Land-mass type - continent Land-mass type - shelf island |
Average mass | - |
Estimate | Data quality | |
---|---|---|
Extent of Occurrence breeding/resident (km2) | 29,800,000 | medium |
Number of locations | - | |
Severely Fragmented | - |
Value | Data quality | Derivation | Year of estimate | |
---|---|---|---|---|
No. of mature individuals | 4000 | medium | estimated | 2002 |
Population trend | Decreasing | suspected | - | |
Decline (3 years/1 generation past) | - | - | - | |
Decline (5 years/1 generation past) | - | - | - | |
Decline (10 years/1 generation past) | - | - | - | |
Decline (10 years/3 generation future) | - | - | - | |
Decline (10 years/3 generation past and future) | - | - | - | |
Number of subpopulations | - | - | - | |
Percentage in largest subpopulation | - | - | - | |
Generation length (yrs) | 10.5 | - | - | - |
Population justification: The population is thought to number c.5,000 individuals in Australia, 1,000 individuals in the Melanesian islands (G. Dutson in litt. 2002), and 10-20 individuals in New Caledonia. This totals at least 6,000 individuals, roughly equivalent to 4,000 mature individuals.
Trend justification: The population is suspected to be in decline owing to human disturbance and predation by invasive mammals.
Country/Territory | Occurrence status | Presence | Resident | Breeding | Non-breeding | Passage |
---|---|---|---|---|---|---|
Australia | N | Extant | Yes | |||
Brunei | N | Extant | Yes | |||
India | N | Extant | Yes | |||
Indonesia | N | Extant | Yes | |||
Malaysia | N | Extant | Yes | |||
Myanmar | N | Extant | Yes | |||
New Caledonia (to France) | N | Extant | Yes | |||
Papua New Guinea | N | Extant | Yes | |||
Philippines | N | Extant | Yes | |||
Singapore | N | Extant | Yes | |||
Solomon Islands | N | Extant | Yes | |||
Thailand | N | Extant | Yes | |||
Timor-Leste | N | Extant | Yes | |||
Vanuatu | N | Extant | Yes |
Country/Territory | IBA Name |
---|---|
Australia | Tiwi Islands |
Australia | Shoalwater Bay (Rockhampton) |
Australia | Cooloola and Fraser Coast |
Australia | Repulse Bay to Ince Bay |
Habitat (level 1) | Habitat (level 2) | Importance | Occurrence |
---|---|---|---|
Marine Coastal/Supratidal | Coastal Brackish/Saline Lagoons/Marine Lakes | suitable | resident |
Marine Coastal/Supratidal | Sea Cliffs and Rocky Offshore Islands | suitable | resident |
Marine Intertidal | Mud Flats and Salt Flats | major | resident |
Marine Intertidal | Rocky Shoreline | major | resident |
Marine Intertidal | Salt Marshes (Emergent Grasses) | suitable | resident |
Marine Intertidal | Sandy Shoreline and/or Beaches, Sand Bars, Spits, Etc | major | resident |
Marine Intertidal | Shingle and/or Pebble Shoreline and/or Beaches | major | resident |
Marine Intertidal | Tidepools | major | resident |
Altitude | Occasional altitudinal limits |
Threat (level 1) | Threat (level 2) | Impact and Stresses | |||||||
---|---|---|---|---|---|---|---|---|---|
Climate change & severe weather | Storms & flooding | Timing | Scope | Severity | Impact | ||||
Future | Unknown | Unknown | Unknown | ||||||
|
|||||||||
Human intrusions & disturbance | Recreational activities | Timing | Scope | Severity | Impact | ||||
Ongoing | Majority (50-90%) | Negligible declines | Low Impact: 5 | ||||||
|
|||||||||
Invasive and other problematic species, genes & diseases | Invasive non-native/alien species/diseases - Unspecified species | Timing | Scope | Severity | Impact | ||||
Ongoing | Minority (<50%) | Negligible declines | Low Impact: 4 | ||||||
|
Recommended citation
BirdLife International (2022) Species factsheet: Esacus magnirostris. Downloaded from
http://www.birdlife.org on 23/05/2022.
Recommended citation for factsheets for more than one species: BirdLife International (2022) IUCN Red List for birds. Downloaded from
http://www.birdlife.org on 23/05/2022.