Margarornis stellatus
The Star-chested Treerunner (Margarornis stellatus) is a captivating small passerine of the Furnariidae family, native to the Andean cloud forests. Measuring approximately 14-15 cm (5.5-6 inches) in length, it is characterized by its rufous-brown upperparts, a dark crown contrasted by a pale supercilium, and a distinctive rufous tail with stiffened central shafts used for support while climbing. Its most striking feature, giving it its common name, is the heavily spotted underparts: a dark ch...
This species primarily inhabits humid subtropical and tropical montane forests, including cloud forest and temperate forest edges, typically at elevations between 1,500 and 2,800 meters (4,900-9,200 feet).
The Star-chested Treerunner feeds almost exclusively on small arthropods, including insects and spiders, which it extracts by gleaning and probing bark, moss, and epiphytes on tree trunks and branches.
Star-chested Treerunners are diurnal birds known for their highly specialized foraging technique. They methodically climb tree trunks and large branches, often spiraling upwards, using their stiff tail feathers as a prop, much like a woodpecker. Their primary strategy involves gleaning and probin...
The Star-chested Treerunner is a resident species found along the humid slopes of the Andes mountains in South America. Its distribution spans southern Colombia, extending through the full length of Ecuador, and reaching into the extreme northern regions of Peru. In Colombia, it is restricted to ...
Least Concern
- The 'Star-chested' pattern is one of the most distinctive markings among all treerunners, giving it its memorable common name. - Despite being an ovenbird (family Furnariidae), its climbing technique with stiff tail feathers is remarkably similar to that of woodcreepers and woodpeckers. - Its s...