LC
Unicolored Antwren Myrmotherula unicolor



Family: Thamnophilidae (Typical Antbirds)

Authority: (Ménétries, 1835)

Red List Category

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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 size: unknown

Population trend: decreasing

Extent of occurrence (breeding/resident): 254,000 km2

Country endemic: yes

Attributes
Land-mass type - continent
Realm - Neotropical
IUCN System - Terrestrial

Recommended citation
BirdLife International (2024) Species factsheet: Unicolored Antwren Myrmotherula unicolor. Downloaded from https://datazone.birdlife.org/species/factsheet/unicolored-antwren-myrmotherula-unicolor on 25/11/2024.
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 25/11/2024.