NT
Acre Tody-tyrant Hemitriccus cohnhafti



Taxonomy

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.

IUCN Red List criteria met and history
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
Species attributes

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

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

Important Bird and Biodiversity Areas (IBA)
Country/Territory IBA Name

Habitats & altitude
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  

Threats & impact
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

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 06/12/2024.
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 06/12/2024.