Arremon axillaris
The Yellow-mandibled Sparrow (Arremon axillaris) is a striking, medium-sized New World sparrow, typically measuring around 15-16 cm (6-6.3 inches) in length. Its most distinctive feature is its bright yellow, conical bill, especially the prominent lower mandible, which stands out against a bold black head. A clean white supercilium contrasts sharply with the black cap, extending from the bill to the nape, while a broad white throat and breast complete the striking frontal pattern. The back, w...
Inhabits the dense undergrowth and bamboo thickets of humid montane cloud forests and their edges, typically found at elevations between 1,000 to 2,400 meters (3,300 to 7,900 feet) in the Andes.
Omnivorous, primarily consuming a variety of insects and other small invertebrates gleaned from the forest floor and low vegetation, supplemented by seeds, small fruits, and plant matter.
Primarily diurnal, the Yellow-mandibled Sparrow is a secretive ground-forager, spending most of its time hidden within dense vegetation. It employs a distinctive foraging strategy, hopping forward and then backward to scratch away leaf litter with its feet, uncovering insects and seeds with its s...
The Yellow-mandibled Sparrow is endemic to the humid montane forests of the Andes in Colombia, where it is a resident species, undertaking no significant seasonal migrations. Its distribution is highly restricted to the Central and Western Andes ranges, encompassing departments such as Antioquia,...
Least Concern
- Its bright yellow lower mandible is one of the most distinctive features among New World sparrows, making it almost instantly recognizable. - Despite its striking appearance, the Yellow-mandibled Sparrow is notoriously shy and often remains hidden in dense undergrowth, making it a challenging b...