White-bearded Antshrike Biatas nigropectus

Family: Thamnophilidae (Typical Antbirds)

Authority: (Lafresnaye, 1850)

Red List Category

Criteria: C2a(i)b

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Justification of Red List category
The species's population is estimated at less than 10,000 mature individuals. A total dependence on one or few species of bamboo, whose reproduction is followed by massive die-off events, suggests that the species's current population is fluctuating and declining due to the clearing of its bamboo habitat. It consequently qualifies as Vulnerable.

Population size: 2500-9999

Population trend: Decreasing

Extent of occurrence (breeding/resident): 605,000 km2

Country endemic: No

Land-mass type - continent
Realm - Neotropical
IUCN Ecosystem -- Terrestrial biome

Recommended citation
BirdLife International (2023) Species factsheet: Biatas nigropectus. Downloaded from on 31/03/2023. Recommended citation for factsheets for more than one species: BirdLife International (2023) IUCN Red List for birds. Downloaded from on 31/03/2023.