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

Justification of Red List category
This species has an extremely 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 is very large, and hence does not 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 is suspected to number 500,000-4,999,999 mature individuals (Partners in Flight 2021). The species is described as fairly common to common throughout much of its range (del Hoyo et al. 2003).

Trend justification
The species is undergoing a decline (Partners in Flight 2021). Despite some tolerance of habitat fragmentation the species is becoming increasingly rare in young and successional growth as well as in plantations (Tarwater and Kelley 2020). Tree cover within the range is lost at a rate of 6-9% over ten years (Global Forest Watch 2023, using Hansen et al. [2013] data and methods disclosed therein). Under the assumption that population declines are roughly equivalent to the rate of tree cover loss, they are here placed in the band 1-19% over ten years.

The species occurs in a large range from Central America to northern South America.

It inhabits primary and mature secondary humid forests. Even though it can also be found along edges and in relatively small forest fragments, it still appears to prefer forest interior (Tarwater and Kelley 2020).

It is threatened by the large-scale conversion of forests for agricultural expansion.

Text account compilers
Hermes, C.

Contributors
Butchart, S., Ekstrom, J. & Miller, E.

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Recommended citation
BirdLife International (2024) Species factsheet: Black-crowned Antshrike Thamnophilus atrinucha. Downloaded from https://datazone.birdlife.org/species/factsheet/black-crowned-antshrike-thamnophilus-atrinucha on 27/12/2024.
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 27/12/2024.