Arremon nigriceps
The Marañon Sparrow (*Arremon nigriceps*) is a striking New World sparrow renowned for its distinctive head pattern and highly restricted geographic range. Measuring approximately 15 cm (6 inches) in length, it features a bold black hood covering the crown, nape, and ear coverts, dramatically contrasted by a prominent white supercilium and a short white malar stripe that merges into its white throat. Its upperparts are a rich olive-green, while the belly is clean white with greyish flanks, an...
This species inhabits the dense undergrowth of dry and semi-deciduous woodlands, thornscrub, and secondary growth, primarily along the Marañón River valley and its tributaries, generally at elevations between 200 and 1300 meters.
The diet primarily consists of insects and other small invertebrates gleaned from leaf litter on the forest floor, supplemented with seeds and small fruits.
The Marañon Sparrow is a rather secretive bird, typically observed foraging on or very near the ground, often hidden within dense vegetation. It employs a characteristic two-footed hop-scratch technique to uncover insects and other invertebrates from the leaf litter, moving deliberately and quiet...
The Marañon Sparrow is endemic to a highly restricted region of northern Peru, specifically inhabiting the Marañón River valley and its principal tributaries. Its distribution spans parts of the Peruvian departments of Cajamarca, Amazonas, and La Libertad, with a core range centered around the co...
Least Concern
- The "nigriceps" in its scientific name, *Arremon nigriceps*, literally means "black-headed" in Latin, perfectly describing its most striking field mark. - This sparrow is an "endemic" species, meaning it is found nowhere else on Earth except for the restricted Marañón River valley in northern P...