LC
Natterer's Slaty Antshrike Thamnophilus stictocephalus



Justification

Justification of Red List Category
This species has a very large range, and hence does not approach the thresholds for Vulnerable under the range size criterion (Extent of Occurrence <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). Despite the fact that the population trend appears to be decreasing, the decline is not believed to be sufficiently rapid to approach the thresholds for Vulnerable under the population trend criterion (>30% decline over ten years or three generations). The population size has not been quantified, but it is not believed to approach the thresholds for Vulnerable under the population size criterion (<10,000 mature individuals with a continuing decline estimated to be >10% in ten years or three generations, or with a specified population structure). For these reasons the species is evaluated as Least Concern.

Population justification
The global population size has not been quantified, but it is believed to be large as the species is described as locally fairly common in at least parts of its wide range (Zimmer and Isler 2003).

Trend justification
This species is suspected to lose 22.7-31% of suitable habitat within its distribution over three generations (15 years) based on a model of Amazonian deforestation (Soares-Filho et al. 2006, Bird et al. 2011). However, given the species's tolerance of fragmentation/degradation/edge-effects and/or the extent of overall losses, it is suspected to decline by <25% over three generations.

Distribution and population

This species has a large range in southern Amazonia; from extreme north Bolivia north-east to coastal Pará in Brazil.

Acknowledgements

Text account compilers
Pilgrim, J.


Recommended citation
BirdLife International (2019) Species factsheet: Thamnophilus stictocephalus. Downloaded from http://www.birdlife.org on 16/10/2019. Recommended citation for factsheets for more than one species: BirdLife International (2019) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 16/10/2019.