Data Zone
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 |
|---|---|---|
| - | - | - |
| Year | Category | Criteria |
|---|---|---|
| 2016 | Least Concern | |
| 2012 | Least Concern | |
| 2009 | Least Concern | |
| 2008 | Least Concern | |
| 2004 | Least Concern | |
| 2000 | Lower Risk/Least Concern | |
| 1994 | Lower Risk/Least Concern | |
| 1988 | Lower Risk/Least Concern |
| Migratory status | full migrant | Forest dependency | low |
| Land-mass type | Average mass | - |
| Estimate | Data quality | |
|---|---|---|
| Extent of Occurrence (breeding/resident) | 9,580,000 km2 | |
| Extent of Occurrence (non-breeding) | 11,100,000 km2 | |
| Severely fragmented? | no | - |
| Estimate | Data quality | Derivation | Year of estimate | |
|---|---|---|---|---|
| Population size | unknown | poor | estimated | 2009 |
| Population trend | decreasing | - | suspected | - |
| Generation length | 10.1 years | - | - | - |
Population justification: The population is estimated to number 100,000-1,000,000 individuals (Wetlands International 2018).
Trend justification: The overall population trend is uncertain, but the species may tentatively be suspected to be in decline (Wetlands International 2018).
| Country/Territory | Presence | Origin | Resident | Breeding visitor | Non-breeding visitor | Passage migrant |
|---|---|---|---|---|---|---|
| Australia | extant | native | yes | |||
| Indonesia | extant | native | ||||
| New Zealand | extant | vagrant | ||||
| Norfolk Island (to Australia) | extant | vagrant | ||||
| Papua New Guinea | extant | native |
| Country/Territory | IBA Name |
|---|---|
| Australia | Alligator Rivers Floodplains |
| Australia | Arafura Swamp |
| Australia | Broad Sound |
| Australia | Cooper Floodplain Below Windorah |
| Australia | Diamantina and Astrebla Grasslands |
| Australia | Fortescue Marshes |
| Australia | Gwydir Wetlands |
| Australia | Hunter Estuary |
| Australia | Lake Corangamite Complex |
| Australia | Lake Machattie Area |
| Australia | Lake Sylvester System |
| Australia | Lowbidgee Floodplain |
| Australia | Macquarie Marshes |
| Australia | Mandora Marsh and Anna Plains |
| Australia | Narran Wetlands |
| Australia | North Victorian Wetlands |
| Australia | Swan Bay and Port Phillip Bay Islands |
| Australia | Tarrabool Lake-Eva Downs Swamp System |
| Habitat (level 1) | Habitat (level 2) | Importance | Occurrence |
|---|---|---|---|
| Artificial/Aquatic & Marine | Artificial/Aquatic - Irrigated Land (includes irrigation channels) | suitable | breeding |
| Artificial/Aquatic & Marine | Artificial/Aquatic - Irrigated Land (includes irrigation channels) | suitable | non-breeding |
| Artificial/Terrestrial | Arable Land | suitable | breeding |
| Artificial/Terrestrial | Arable Land | suitable | non-breeding |
| Artificial/Terrestrial | Pastureland | suitable | breeding |
| Artificial/Terrestrial | Pastureland | suitable | non-breeding |
| Forest | Subtropical/Tropical Dry | suitable | breeding |
| Forest | Subtropical/Tropical Dry | suitable | non-breeding |
| Grassland | Temperate | suitable | breeding |
| Grassland | Temperate | suitable | non-breeding |
| Altitude | Occasional altitudinal limits |
| Purpose | Scale |
|---|---|
| Pets/display animals, horticulture | international |
Recommended citation
BirdLife International (2024) Species factsheet: Straw-necked Ibis Threskiornis spinicollis. Downloaded from
https://datazone.birdlife.org/species/factsheet/straw-necked-ibis-threskiornis-spinicollis on 21/12/2024.
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 21/12/2024.