Medium-sized Yungas flycatcher measuring 20–22 cm in length, with a robust appearance and generally upright posture. It has an olive-brown back, dark wings and tail with rufous-cinnamon edges. The underparts are yellow, with fine olive streaking on the breast, more evident on the flanks, and a whitish throat. The head displays a highly distinctive pattern consisting of a broad whitish supercilium, dark mask, and a prominent black malar stripe forming the characteristic “chinstrap” from which its common name is derived. The crown is grayish-brown and conceals a small golden-yellow patch that is usually difficult to observe. The bill is black, broad, and strong, with a slightly hooked tip, accompanied by prominent rictal bristles. Iris dark brown and legs dark. Sexes are similar. Juveniles resemble adults but show duller tones and a less contrasting crown.
Geographic Distribution: Distributed from northern Peru south through Bolivia, reaching the extreme northwestern part of Argentina, where it is known primarily from the Yungas of Jujuy and Salta. Most records are concentrated in northern Salta, near Santa Victoria Oeste and Los Toldos, close to the Bolivian border, and especially in Jujuy, within the Yungas corridor extending between San Francisco and Calilegua National Park, including the Jordán River Valley, where its presence and breeding have been repeatedly documented. It generally inhabits elevations between 1,000 and 2,300 m above sea level, although it may occur locally at higher or lower elevations. It is considered resident, although it probably undertakes seasonal altitudinal movements.
Habitat: Inhabits edges of montane forest, humid ravines, steep banks, watercourses, natural clearings, and open areas within the Yungas. It shows a preference for steep slopes, landslides, and cliffs associated with rivers and streams, where it frequently uses exposed branches and hanging lianas as perches (personal obs.).
Diet: Feeds primarily on arthropods, especially flying insects captured during short sallies from elevated perches, usually returning to the same perch afterward. Its diet is supplemented with small fruits when available.
Behavior: Usually observed alone or in pairs. It remains motionless for long periods on exposed branches, from which it surveys its surroundings. It performs short flights to capture prey or collect fruit. It may occasionally join mixed-species flocks. Its behavior often goes unnoticed, and it is frequently detected by voice long before it is seen. It is a rather vocal species. Its most characteristic vocalization consists of a nasal, penetrating whistle, commonly transcribed as “chu-WI,” repeated at regular intervals from elevated perches. It also produces more complex sequences of harsh notes when interacting with other individuals.
Breeding: The nest consists of an open cup constructed from mosses, plant fibers, and other soft materials, usually placed on natural ledges of banks, embankments, or protected cavities near watercourses. The known clutch consists of two eggs with a whitish or creamy background marked with cinnamon-colored spots concentrated at one pole. In Argentina, documented records of active nesting exist from Jujuy, including observations of adults feeding nestlings in nests located on rocky banks in the Jordán River Valley, as well as within Calilegua National Park (personal obs.).
Conservation Status: Classified as Least Concern (LC) at the international level. In Argentina, it was historically treated as an occasional species or one of uncertain occurrence. However, the sustained increase in observations throughout the Yungas of Salta and Jujuy, together with multiple records of breeding activity, suggests the existence of a stable breeding population in the country. Its national conservation status therefore deserves reassessment in future evaluations (personal obs.).
Observations: The first Argentine record was reported from Santa Victoria (Salta) during the 1990s, although its presence remained hypothetical for several years. The species was subsequently confirmed through photographic documentation and sound recordings obtained in 2004. Later, the observation of juveniles, active nests, and adults feeding nestlings in the Jordán River Valley and other localities within Calilegua National Park confirmed its breeding status in Argentina. Since the first breeding records obtained in 2007, the species has continued to be observed regularly in the region, including additional indications of nesting activity. It is currently represented by numerous records, particularly within the Yungas of Jujuy.
Authors of this Compilation: María Belén Dri and Diego Carús – 06/10/2026