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

Taxonomic note

Amaurospiza moesta and A. relicta (del Hoyo and Collar 2016) were previously lumped within A. moesta, which was previously split into A. moesta, A. concolor and A. carrizalensis following following SACC (2005 and updates); Sibley and Monroe (1990, 1993); Stotz et al. (1996).

 

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.

Red List criteria met

Critically Endangered	Endangered	Vulnerable
-	-	-

Red List history

Year	Category	Criteria
2018	Least Concern
2016	Least Concern

Migratory status	not a migrant	Forest dependency	high
Land-mass type		Average mass	14 g

	Estimate	Data quality
Extent of Occurrence (breeding/resident)	13,600,000 km2	medium
Severely fragmented?	no	-

	Estimate	Data quality	Derivation	Year of estimate
Population size	unknown	-	-	-
Population trend	decreasing	poor	suspected	1998-2008
Generation length	3.8 years	-	-	-

Population justification: The global population size has not been quantified, but is suspected to be large.

Trend justification: The population trend is not known, but the population is suspected to be declining due to habitat loss.

Country/Territory	Presence	Origin	Resident	Breeding visitor	Non-breeding visitor	Passage migrant
Argentina	extant	native	yes
Brazil	extant	native	yes
Colombia	extant	native	yes
Ecuador	extant	native	yes
Honduras	extant	native	yes
Mexico	extant	native	yes
Nicaragua	extant	native	yes
Panama	extant	native	yes
Paraguay	extant	native	yes
Peru	extant	native	yes
Venezuela	extant	native	yes

Country/Territory	IBA Name
Argentina	Parque Provincial Salto Encantado del Valle del Cuñá-Pirú y alrededores
Argentina	Dos de Mayo
Argentina	Parque Nacional Iguazú y alrededores
Argentina	Parque Provincial Urugua-í
Argentina	Parque Provincial Uruzú y Reserva Forestal San Jorge
Argentina	Corredor Urugua-í Foerster
Argentina	Parque Provincial Guardaparque Horacio Foerster
Argentina	San Antonio
Argentina	Sierra Morena
Argentina	Alta cuenca del arroyo Alegría
Argentina	San Pedro
Argentina	Reserva Privada Yaguaroundí
Argentina	Reserva de la Biósfera Yabotí
Argentina	Cerro Mártires y Barra Santa María
Argentina	Parque Provincial Cruce Caballero
Argentina	Extremo noreste de Corrientes
Paraguay	Estancia Itabó
Paraguay	Limoy
Paraguay	Bosque Mbaracayú
Paraguay	Reserva Itabó - Itaipú
Paraguay	Parque Nacional Caazapá
Paraguay	Tapyta
Paraguay	Parque Nacional San Rafael
Paraguay	Estancia Muxfeldt
Paraguay	Serranías de San Joaquín
Venezuela	Caruachi
Brazil	Serra do Marumbi
Brazil	Parque Estadual do Rio Guarani
Brazil	Parque Nacional de Itatiaia
Brazil	Parque Estadual do Turvo
Brazil	Região dos Aparados da Serra

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Forest	Subtropical/Tropical Moist Lowland	major	resident
Forest	Subtropical/Tropical Moist Montane	major	resident
Altitude	0 - 1600 m	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
		Stresses Ecosystem degradation, Ecosystem conversion
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
		Stresses Ecosystem degradation, Ecosystem conversion
Agriculture & aquaculture	Wood & pulp plantations - Agro-industry plantations	Timing		Scope		Severity		Impact
		Ongoing		Majority (50-90%)		Slow, Significant Declines		Medium Impact: 6
		Stresses Ecosystem degradation, Ecosystem conversion
Biological resource use	Logging & wood harvesting - Unintentional effects: (large scale) [harvest]	Timing		Scope		Severity		Impact
		Ongoing		Minority (<50%)		Slow, Significant Declines		Low Impact: 5
		Stresses Ecosystem degradation, Ecosystem conversion
Residential & commercial development	Commercial & industrial areas	Timing		Scope		Severity		Impact
		Ongoing		Majority (50-90%)		Slow, Significant Declines		Medium Impact: 6
		Stresses Ecosystem degradation, Ecosystem conversion
Residential & commercial development	Housing & urban areas	Timing		Scope		Severity		Impact
		Ongoing		Majority (50-90%)		Slow, Significant Declines		Medium Impact: 6
		Stresses Ecosystem degradation, Ecosystem conversion
Transportation & service corridors	Roads & railroads	Timing		Scope		Severity		Impact
		Ongoing		Majority (50-90%)		Slow, Significant Declines		Medium Impact: 6
		Stresses Species disturbance, Ecosystem degradation, Ecosystem conversion

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Recommended citation
BirdLife International (2023) Species factsheet: Amaurospiza moesta. Downloaded from http://datazone.birdlife.org/species/factsheet/blue-seedeater-amaurospiza-moesta on 04/12/2023.
Recommended citation for factsheets for more than one species: BirdLife International (2023) IUCN Red List for birds. Downloaded from http://datazone.birdlife.org on 04/12/2023.