Biatas nigropectus
The White-bearded Antshrike (Biatas nigropectus) is a captivating and highly sought-after member of the antbird family (Thamnophilidae), endemic to the Atlantic Forest of southeastern Brazil, northeastern Argentina, and eastern Paraguay. This sexually dimorphic species measures approximately 17-18 cm in length and weighs between 25-30 grams. Males are striking, characterized by a slate-gray head, a prominent white malar stripe resembling a 'beard' (hence the common name), a contrasting glossy...
This antshrike primarily inhabits the dense understory of humid montane and lowland Atlantic Forest, showing a strong preference for thick bamboo (Guadua) stands, typically found at elevations from sea level up to 1500 meters.
Their diet consists mainly of insects and other arthropods, which they glean from foliage, often targeting the leaves and stems of bamboo plants.
The White-bearded Antshrike is a highly secretive and diurnal bird, typically observed alone or, more commonly, in pairs, maintaining a low profile within dense vegetation. They are often detected by their distinctive vocalizations rather than visual sighting. Foraging occurs primarily by gleanin...
The White-bearded Antshrike is a resident endemic to the Atlantic Forest biome of southeastern South America. Its primary distribution lies within southeastern Brazil, extending across the states of São Paulo, Rio de Janeiro, Paraná, Santa Catarina, and northern Rio Grande do Sul. Small, disjunct...
Vulnerable
- The White-bearded Antshrike is the sole member of its genus, Biatas, making it a monotypic species and a unique branch on the avian evolutionary tree. - Its common name directly refers to the striking white malar stripe on the male, which gives the appearance of a 'beard' contrasting sharply wi...