• Summary
• Text account
• Data table and detailed info
• Distribution map
• Reference and further resources

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., Fishpool, L.D.C., Boesman, P. and Kirwan, G.M. 2016. HBW and BirdLife International Illustrated Checklist of the Birds of the World. Volume 2: Passerines. Lynx Edicions and BirdLife International, Barcelona, Spain and Cambridge, UK.

Red List criteria met

Critically Endangered	Endangered	Vulnerable
-	A2abc	A2abc; B1ab(i,ii,iii,iv,v)+2ab(i,ii,iii,iv,v)

Red List history

Year	Category	Criteria
2022	Endangered	A2abc
2016	Endangered	A2abc
2012	Endangered	A2abc+3bc+4abc
2008	Endangered	A2a,b,c; A3b,c; A4a,b,c
2006	Vulnerable
2004	Vulnerable
2000	Vulnerable
1996	Lower Risk/Conservation Dependent
1994	Lower Risk/Conservation Dependent
1988	Threatened

Migratory status	not a migrant	Forest dependency	does not normally occur in forest
Land-mass type	Australia	Average mass	-

	Estimate	Data quality
Extent of Occurrence (breeding/resident)	16,250 km2	medium
Area of Occupancy (breeding/resident)	700 km2
Number of locations	3-10,5	-
Severely fragmented?	yes	-

	Estimate	Data quality	Derivation	Year of estimate
Population size	2000-12400, 6600 mature individuals	medium	estimated	2020
Population trend	decreasing	medium	estimated	1998-2008
Rate of change over the past 10 years/3 generations (longer of the two periods)	50-70%	-	-	-
Generation length	2.12 years	-	-	-
Number of subpopulations	3	-	-	-
Percentage of mature individuals in largest subpopulation	1-89%	-	-	-

Population justification: In 2019, the population of Mallee Emu-wrens was estimated to be 6,629 (2,003–12,363), all in Victoria (Verdon and Clarke 2019). This included 5,368 individuals in Murray-Sunset, 832 in Hattah/Nowingi and 180 birds in Big Desert-Wyperfeld Complex and 249 on other land tenures (Verdon and Clarke 2019).

Trend justification: The current population estimate is 60% lower than an estimated 16,800 (8,400–39,100) individuals in 2009 (Brown et al. 2009). In South Australia, the population in Ngarkat Conservation Park was 4,000–7,000 birds in 2000, where it had been recovering from fires in the 1980s (DELWP 2016), but this population was lost entirely in 2014. Overall the population is thought to have declined by 50-70% in the last ten years (Verdon et al. 2021).

Country/Territory	Presence	Origin	Resident	Breeding visitor	Non-breeding visitor	Passage migrant
Australia	extant	native	yes

Country/Territory	IBA Name
Australia	Billiatt
Australia	Murray-Sunset, Hattah and Annuello
Australia	Wyperfeld, Big Desert and Ngarkat

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Shrubland	Mediterranean-type Shrubby Vegetation	major	resident
Altitude	30 - 100 m	Occasional altitudinal limits

Threat (level 1)	Threat (level 2)	Impact and Stresses
Agriculture & aquaculture	Livestock farming & ranching - Agro-industry grazing, ranching or farming	Timing		Scope		Severity		Impact
		Past, Unlikely to Return		Majority (50-90%)		No decline		Past Impact
		Stresses Ecosystem degradation, Ecosystem conversion
Climate change & severe weather	Droughts	Timing		Scope		Severity		Impact
		Ongoing		Whole (>90%)		Unknown		Unknown
		Stresses Indirect ecosystem effects, Ecosystem degradation
Climate change & severe weather	Habitat shifting & alteration	Timing		Scope		Severity		Impact
		Future		Whole (>90%)		Unknown		Unknown
		Stresses Indirect ecosystem effects, Ecosystem degradation
Climate change & severe weather	Temperature extremes	Timing		Scope		Severity		Impact
		Ongoing		Whole (>90%)		Unknown		Unknown
		Stresses Ecosystem degradation, Species mortality
Natural system modifications	Fire & fire suppression - Increase in fire frequency/intensity	Timing		Scope		Severity		Impact
		Ongoing		Majority (50-90%)		Rapid Declines		Medium Impact: 7
		Stresses Ecosystem degradation
Pollution	Agricultural & forestry effluents - Herbicides and pesticides	Timing		Scope		Severity		Impact
		Ongoing		Unknown		Negligible declines		Unknown
		Stresses Ecosystem degradation, Species mortality
Residential & commercial development	Commercial & industrial areas	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		Rapid Declines		Medium Impact: 6
		Stresses Ecosystem degradation, Ecosystem conversion

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Recommended citation
BirdLife International (2024) Species factsheet: Mallee Emu-wren Stipiturus mallee. Downloaded from https://datazone.birdlife.org/species/factsheet/mallee-emu-wren-stipiturus-mallee on 23/11/2024.
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 23/11/2024.