Polystictus pectoralis
The Bearded Tachuri (Polystictus pectoralis) is a remarkably diminutive passerine, measuring merely 9-10 cm (3.5-3.9 in) in length and weighing around 6-7 grams, making it one of the smallest tyrant flycatchers. Its stocky build, short tail, and upright posture give it a distinctive appearance. Males are particularly striking, adorned with a black crown, a prominent white supercilium, and a defining broad black malar stripe (the 'beard') that contrasts sharply with white lores and throat. The...
This species primarily inhabits dry, open grasslands, savannas, and pampas, often with scattered shrubs, bushes, or isolated trees. It typically occurs at low elevations, rarely exceeding 1,000 meters (3,300 feet).
The Bearded Tachuri primarily feeds on small insects, including flies, beetles, and moths. It forages by making short, acrobatic aerial sallies from low perches to catch prey in flight or gleaning from vegetation.
Bearded Tachuris are generally observed singly or in pairs, exhibiting a rather inconspicuous demeanor despite their striking appearance. They are active during the day, spending much of their time perched low on a fence post, small bush, or tall grass stem, often twitching their short tail. Fora...
The Bearded Tachuri has a fragmented distribution across south-central South America. Its breeding range extends from eastern Bolivia and southwestern Brazil (Mato Grosso do Sul) south through Paraguay, Uruguay, and into northeastern Argentina (Misiones, Corrientes, Entre Ríos, Santa Fe, and Buen...
Least Concern
- The Bearded Tachuri is one of the smallest birds in the entire Tyrannidae family, often compared in size to a very tiny hummingbird. - Its distinctive black malar stripe on the male resembles a 'beard,' giving the species its common name. - Despite its tiny size, it is a fierce insectivore, usi...