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

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: https://www.museum.lsu.edu/~Remsen/SACCBaseline.htm.

Red List criteria met

Critically Endangered	Endangered	Vulnerable
-	-	-

Red List history

Year	Category	Criteria
2019	Least Concern
2016	Vulnerable	B1ab(i,ii,iii)
2012	Vulnerable	B1ab(i,ii,iii)
2011	Vulnerable	B1a+b(i,ii,iii)
2008	Near Threatened	B1a+b(ii,iii,v)
2004	Near Threatened
2002	Near Threatened
2000	Not Recognised
1994	Not Recognised
1988	Not Recognised

Migratory status	not a migrant	Forest dependency	high
Land-mass type	continent	Average mass	12 g

	Estimate	Data quality
Extent of Occurrence (breeding/resident)	979,000 km2	good
Severely fragmented?	no	-

	Estimate	Data quality	Derivation	Year of estimate
Population size	unknown	-	-	-
Population trend	decreasing	poor	suspected	2000-2011
Rate of change over the past 10 years/3 generations (longer of the two periods)	1-9%	-	-	-
Rate of change over the future 10 years/3 generations (longer of the two periods)	1-9%	-	-	-
Rate of change over the past & future 10 years/3 generations (longer of the two periods)	1-9%	-	-	-
Generation length	3.6 years	-	-	-

Population justification: The global population size has not been quantified. Data from Sucumbíos (Ecuador) suggest that the species is uncommon.

Trend justification: The species's population is thought to be in decline owing principally to ongoing deforestation, but the  population trend has not been estimated directly. Tracewski et al. (2016) measured the forest loss within this species’s range between 2000 and 2012 as c.80 km². This roughly equates to a rate of forest loss of 1.6% over three generations (10.8 years) for this species, with the assumption that habitat loss has continued at the same rate to the present day. For a highly forest-dependent species like Foothill Elaenia, population changes may be proportional to forest cover change. Therefore, the species is suspected to decline at <10% over three generations.

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

Country/Territory	IBA Name
Ecuador	Cordillera de Kutukú
Ecuador	Reserva Ecológica Cofán-Bermejo

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Forest	Subtropical/Tropical Moist Montane	major	resident
Altitude	890 - 1500 m	Occasional altitudinal limits	800 - 1650 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%)		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		Majority (50-90%)		Slow, Significant Declines		Medium Impact: 6
		Stresses Ecosystem degradation, Ecosystem conversion
Residential & commercial development	Housing & urban areas	Timing		Scope		Severity		Impact
		Future		Minority (<50%)		Slow, Significant Declines		Low Impact: 3
		Stresses Ecosystem degradation, Ecosystem conversion

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Recommended citation
BirdLife International (2024) Species factsheet: Foothill Elaenia Myiopagis olallai. Downloaded from https://datazone.birdlife.org/species/factsheet/foothill-elaenia-myiopagis-olallai on 23/12/2024.
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 23/12/2024.