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

Taxonomic note
Hemitriccus cohnhafti (del Hoyo and Collar 2016) is recognized as a species following work by Zimmer et al. (2013).

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
2023	Near Threatened	B1ab(i,ii,iii)
2016	Near Threatened	B1b(i)
2012	Not Recognised
2008	Not Recognised
2004	Not Recognised
2000	Not Recognised
1994	Not Recognised
1988	Not Recognised

Migratory status	unknown	Forest dependency	medium
Land-mass type		Average mass	-

	Estimate	Data quality
Extent of Occurrence (breeding/resident)	19,940 km2
Number of locations	11-100	-
Severely fragmented?	no	-

	Estimate	Data quality	Derivation	Year of estimate
Population size	unknown	-	-	-
Population trend	decreasing	-	suspected	-
Generation length	2.57 years	-	-	-
Number of subpopulations	1	-	-	-
Percentage of mature individuals in largest subpopulation	100%	-	-	-

Population justification: The population size of this species has not been quantified, but given the paucity of records and small range it is unlikely to be very large. However, further surveys, particularly in potentially suitable habitat in Bolivia and Peru, may help conclude how abundant this species may be.

Trend justification: The population trend has not been investigated. Within its known range, deforestation is ongoing and extensive (Global Forest Watch 2022). Over the last ten years, 15% of tree cover has been lost within the range; since 2017 this has been increasing to a rate equivalent to 19% over ten years (Global Forest Watch 2022, using Hansen et al. [2013] data and methods disclosed therein). The species is however not dependent on mature forest, but occurs in a variety of secondary, edge and successional habitats (Zimmer et al. 2013), and therefore population declines may not be as steep as the rate of tree cover loss suggests. Nevertheless, the population is likely affected by the extensive and large-scale clearance of shrubby and herbaceous habitat, which is ongoing throughout large parts of the range. Thus, the population is suspected to be in decline, though the exact rate is not known.

Country/Territory	Presence	Origin	Resident	Breeding visitor	Non-breeding visitor	Passage migrant
Bolivia	possibly extant	native	yes
Brazil	extant	native	yes
Peru	extant	native	yes

Country/Territory	IBA Name

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Forest	Subtropical/Tropical Moist Lowland	major	resident
Shrubland	Subtropical/Tropical Moist	major	resident
Altitude	0 - 300 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
		Ongoing		Majority (50-90%)		Slow, Significant Declines		Medium Impact: 6
		Stresses Ecosystem degradation, Ecosystem conversion

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Recommended citation
BirdLife International (2024) Species factsheet: Acre Tody-tyrant Hemitriccus cohnhafti. Downloaded from https://datazone.birdlife.org/species/factsheet/acre-tody-tyrant-hemitriccus-cohnhafti on 26/12/2024.
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 26/12/2024.