Data Zone
Justification of Red List category
This species has a large range, and hence does not approach the thresholds for Vulnerable under the range size criterion (Extent of Occurrence under 20,000 km² combined with a declining or fluctuating range size, habitat extent/quality, or population size and a small number of locations or severe fragmentation). The population size has not been quantified, but it is not believed to approach the thresholds for Vulnerable under the population size criterion (under 10,000 mature individuals with a continuing decline estimated to be over 10% in ten years or three generations, or with a specified population structure). The population trend appears to be stable, and hence the species does not approach the thresholds for Vulnerable under the population trend criterion (over 30% decline over ten years or three generations). For these reasons the species is evaluated as Least Concern.
Population justification
The global population size has not been quantified, but this species was described as 'fairly common', prior to being split (Stotz et al. 1996). This species tolerates converted habitats (del Hoyo et al. 2004) and its population is therefore suspected to be stable.
Trend justification
This species tolerates converted habitats (del Hoyo et al. 2004) and its population is therefore suspected to be stable.
NW Argentina (Salta to N Chubut); may breed also in S Bolivia (Tarija); non-breeding visitor to E Bolivia, Paraguay, S Brazil and Uruguay.
Text account compilers
Rutherford, C.A.
Recommended citation
BirdLife International (2024) Species factsheet: Straneck's Tyrannulet Serpophaga griseicapilla. Downloaded from
https://datazone.birdlife.org/species/factsheet/stranecks-tyrannulet-serpophaga-griseicapilla on 21/12/2024.
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 21/12/2024.