Phacellodomus sibilatrix
The Little Thornbird, *Phacellodomus sibilatrix*, is a diminutive and engaging member of the Furnariidae family, famed for its elaborate, often thorny stick nests. Measuring approximately 13-14 cm in length and weighing 15-20 grams, this passerine is characterized by its dull olive-brown upperparts, a distinct streaked rufous crown, a prominent pale supercilium, and a warm rufous wash on its rump and tail. Its underparts are generally paler, often buffy-whitish, and it possesses a slender, po...
This species favors dry deciduous woodlands, thorn scrub, and Chaco forest, often near riparian zones or water sources, typically at elevations below 1000 meters.
Primarily insectivorous, the Little Thornbird feeds on a variety of arthropods, including insects and spiders, which it gleans from foliage and bark.
The Little Thornbird is a diurnal species, usually observed singly or in pairs, tirelessly foraging during daylight hours. It employs a gleaning foraging strategy, meticulously searching foliage, bark, and twigs for arthropods, often moving with quick, acrobatic movements. Pairs are monogamous, m...
The Little Thornbird is endemic to central South America, with its primary breeding and resident range extending across southeastern Bolivia, western Paraguay, northern Argentina, and southwestern Brazil. Specifically, its distribution encompasses the Gran Chaco ecoregion, including the Chaco Bor...
Least Concern
- The "sibilatrix" in its scientific name comes from Latin, referring to its distinctive whistling or sibilant calls. - Despite its relatively small size, it constructs one of the most elaborate and substantial nests among South American passerines. - Its massive stick nests can sometimes be reus...