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

Taxonomic note

Myrmoderus ruficauda (del Hoyo and Collar 2016) was previously listed as Myrmeciza ruficauda.

 

Taxonomic source(s)
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.
SACC. 2005 and updates. A classification of the bird species of South America. Available at: #http://www.museum.lsu.edu/~Remsen/SACCBaseline.htm#.

Red List criteria met

Critically Endangered	Endangered	Vulnerable
-	C2a(i)	A2c+3c+4c; C2a(i); D1

Red List history

Year	Category	Criteria
2018	Endangered	C2a(i)
2016	Endangered	B1ab(i,ii,iii,iv,v);C2a(i)
2012	Endangered	B1ab(i,ii,iii,iv,v);C2a(i)
2008	Endangered	B1a+b(i,ii,iii,iv,v); C2a(i)
2004	Endangered
2000	Endangered
1996	Vulnerable
1994	Vulnerable
1988	Threatened

Migratory status	not a migrant	Forest dependency	Medium
Land mass type	Land-mass type - continent	Average mass	-

	Estimate	Data quality
Extent of Occurrence breeding/resident (km2)	155,000	medium
Number of locations	11-100	-
Severely Fragmented		-

	Value	Data quality	Derivation	Year of estimate
No. of mature individuals	600-1700	poor	estimated	2000
Population trend	Decreasing	poor	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)	30-49	-	-	-
Decline (10 years/3 generation past and future)	30-49	-	-	-
Number of subpopulations	2-100	-	-	-
Percentage in largest subpopulation	1-89	-	-	-
Generation length (yrs)	4.8	-	-	-

Population justification: The population is estimated to number 1,000-2,499 individuals based on an assessment of known records, descriptions of abundance and range size. This is consistent with recorded population density estimates for congeners or close relatives with a similar body size, and the fact that only a proportion of the estimated Extent of Occurrence is likely to be occupied. This estimate is equivalent to 667-1,666 mature individuals, rounded here to 600-1,700 mature individuals.

Trend justification: A rapid and continuing population decline is suspected, owing to rates of habitat loss.

Country/Territory	Occurrence status	Presence	Resident	Breeding	Non-breeding	Passage
Brazil	N	Extant		Yes

Country/Territory	IBA Name
Brazil	Mamanguape
Brazil	Mata do Estado (Mata do Sirigi)
Brazil	Serra do Mascarenhas
Brazil	Igarassu
Brazil	Tapacurá
Brazil	Complexo Gurjaú
Brazil	Brejo dos Cavalos
Brazil	Guadalupe
Brazil	Serra do Urubu
Brazil	Engenho Coimbra (Usina Serra Grande)
Brazil	Murici
Brazil	Reserva Biológica de Pedra Talhada
Brazil	Fazenda Santana
Brazil	Baixo-Sul
Brazil	Sooretama / Linhares
Brazil	Vitória da Conquista
Brazil	Rio Mucuri

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Artificial/Terrestrial	Subtropical/Tropical Heavily Degraded Former Forest	suitable	resident
Forest	Subtropical/Tropical Dry	major	resident
Forest	Subtropical/Tropical Moist Lowland	major	resident
Altitude	0 - 600 m	Occasional altitudinal limits	(max) 950 m

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%)		Rapid Declines		Medium Impact: 7
		Stresses Ecosystem degradation, Ecosystem conversion
Agriculture & aquaculture	Livestock farming & ranching - Agro-industry grazing, ranching or farming	Timing		Scope		Severity		Impact
		Ongoing		Majority (50-90%)		Rapid Declines		Medium Impact: 7
		Stresses Ecosystem degradation, Ecosystem conversion
Biological resource use	Logging & wood harvesting - Unintentional effects: (subsistence/small scale) [harvest]	Timing		Scope		Severity		Impact
		Ongoing		Majority (50-90%)		Rapid Declines		Medium Impact: 7
		Stresses Ecosystem degradation
Natural system modifications	Fire & fire suppression - Increase in fire frequency/intensity	Timing		Scope		Severity		Impact
		Ongoing		Majority (50-90%)		Slow, Significant Declines		Medium Impact: 6
		Stresses Ecosystem degradation

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Recommended citation
BirdLife International (2022) Species factsheet: Myrmoderus ruficauda. Downloaded from http://www.birdlife.org on 18/08/2022. Recommended citation for factsheets for more than one species: BirdLife International (2022) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 18/08/2022.