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 |
---|---|---|
A2ac | A2ac; C2a(ii) | A2ac; C2a(i,ii); D1 |
Year | Category | Criteria |
---|---|---|
2017 | Critically Endangered | A2ac |
2016 | Endangered | C2a(ii) |
2012 | Endangered | C2a(ii) |
2008 | Endangered | C2a(ii) |
2007 | Endangered | |
2006 | Endangered | |
2004 | Endangered | |
2000 | Endangered | |
1996 | Vulnerable | |
1994 | Vulnerable | |
1988 | Threatened |
Migratory status | not a migrant | Forest dependency | Does not normally occur in forest |
Land mass type |
Land-mass type - Australia |
Average mass | - |
Estimate | Data quality | |
---|---|---|
Extent of Occurrence breeding/resident (km2) | 526,000 | medium |
Number of locations | 11-100 | - |
Severely Fragmented | - |
Value | Data quality | Derivation | Year of estimate | |
---|---|---|---|---|
No. of mature individuals | 250-999 | medium | estimated | 2000 |
Population trend | Decreasing | medium | estimated | - |
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 | 1 | - | - | - |
Percentage in largest subpopulation | 100 | - | - | - |
Generation length (yrs) | 7.3 | - | - | - |
Population justification: The population is estimated to vary from between 5,500–7,000 in good years to around 2,000 birds during periods of widespread drought (Baker-Gabb 2002, Garnett et al. 2011). Regular monitoring has recorded a >90% decline in the species’s Victorian stronghold between 2010 and 2015 (Baker-Gabb et al. 2016), and a 93% decline between 2001 and 2014 in its other stronghold in NSW (Wilson et al. 2014). The TSSC (2015) estimated the total number of mature individuals of Plains-wanderers to be < 1,000 birds in 2015, and so the population size is placed here in the range 250-999 mature individuals.
Trend justification:
A decline of >90% has been detected in the past decade in both of its strongholds, the Riverina of New South Wales and north-central Victoria, due to cultivation, and inappropriate grazing of natural grassland and climatic events (TSSC 2015). The total decline over the past 3 generations (c.22 years) is not known, and as the species will move away from unsuitable areas, part of these reported declines could represent the species moving to new, as yet unfound, sites. However, in the absence of any evidence for this species moving to new areas, the rate of decline in this species may be conservatively suspected to be >80% over the past 3 generations and so is placed here in the range 80-99%.
Country/Territory | Occurrence status | Presence | Resident | Breeding | Non-breeding | Passage |
---|---|---|---|---|---|---|
Australia | N | Extant | Yes |
Country/Territory | IBA Name |
---|---|
Australia | Riverina Plains |
Australia | Boolcoomatta, Bindarrah and Kalkaroo Stations |
Australia | Diamantina and Astrebla Grasslands |
Australia | Patho Plains |
Habitat (level 1) | Habitat (level 2) | Importance | Occurrence |
---|---|---|---|
Artificial/Terrestrial | Arable Land | suitable | non-breeding |
Grassland | Subtropical/Tropical Dry | major | resident |
Grassland | Temperate | major | resident |
Altitude | Occasional altitudinal limits |
Threat (level 1) | Threat (level 2) | Impact and Stresses | |||||||
---|---|---|---|---|---|---|---|---|---|
Agriculture & aquaculture | Annual & perennial non-timber crops - Agro-industry farming | Timing | Scope | Severity | Impact | ||||
Ongoing | Majority (50-90%) | Slow, Significant Declines | Medium Impact: 6 | ||||||
|
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Agriculture & aquaculture | Livestock farming & ranching - Agro-industry grazing, ranching or farming | Timing | Scope | Severity | Impact | ||||
Ongoing | Majority (50-90%) | Slow, Significant Declines | Medium Impact: 6 | ||||||
|
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Biological resource use | Hunting & trapping terrestrial animals - Unintentional effects (species is not the target) | Timing | Scope | Severity | Impact | ||||
Ongoing | Minority (<50%) | Negligible declines | Low Impact: 4 | ||||||
|
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Climate change & severe weather | Droughts | Timing | Scope | Severity | Impact | ||||
Ongoing | Majority (50-90%) | Slow, Significant Declines | Medium Impact: 6 | ||||||
|
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Climate change & severe weather | Storms & flooding | Timing | Scope | Severity | Impact | ||||
Future | Whole (>90%) | Unknown | Unknown | ||||||
|
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Invasive and other problematic species, genes & diseases | Invasive non-native/alien species/diseases - Vulpes vulpes | Timing | Scope | Severity | Impact | ||||
Ongoing | Minority (<50%) | Slow, Significant Declines | Low Impact: 5 | ||||||
|
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Pollution | Agricultural & forestry effluents - Herbicides and pesticides | Timing | Scope | Severity | Impact | ||||
Ongoing | Minority (<50%) | Unknown | Unknown | ||||||
|
Purpose | Primary form used | Life stage used | Source | Scale | Level | Timing |
---|---|---|---|---|---|---|
Food - human | - | - | Non-trivial | Recent |
Recommended citation
BirdLife International (2022) Species factsheet: Pedionomus torquatus. Downloaded from
http://www.birdlife.org on 22/05/2022.
Recommended citation for factsheets for more than one species: BirdLife International (2022) IUCN Red List for birds. Downloaded from
http://www.birdlife.org on 22/05/2022.