Nesotriccus maranonicus
The Marañón Tyrannulet (*Nesotriccus maranonicus*) is a small, unobtrusive member of the Tyrannidae family, measuring about 11 cm (4.3 inches) in length and weighing a mere 7-9 grams (0.25-0.32 oz). Its plumage is generally drab, featuring olive-brown upperparts, a grayish throat, and a pale yellowish wash on the belly. Faint whitish wing-bars are often present but can be indistinct, and it lacks a prominent eye-ring, a key field mark for distinguishing it from similar flycatchers. Taxonomica...
Found in arid to semi-arid scrub, deciduous woodlands, thorny thickets, and gallery forests, often near water sources, at elevations ranging from 200m to 1000m, occasionally up to 2000m.
Feeds primarily on small insects, including beetles, flies, and caterpillars, which it catches by aerial sallies and gleaning from vegetation.
The Marañón Tyrannulet is an active but often inconspicuous bird, typically observed alone or in pairs. It forages primarily in the lower to mid-story of dense vegetation, making short, darting sallies to snatch insects in mid-air or gleaning them directly from foliage and twigs. Territorial beha...
The Marañón Tyrannulet is entirely endemic to the Marañón River valley and its immediate tributaries in northern Peru. Its restricted breeding and resident range spans across parts of the Cajamarca, Amazonas, La Libertad, and Ancash departments. This species is non-migratory and occupies its spec...
Least Concern
- The Marañón Tyrannulet is a true "valley specialist," found exclusively within the dry intermontane Marañón River valley of northern Peru. - Despite its drab appearance, its precise identification relies on the absence of a prominent eye-ring and distinct wing-bars, unlike many other small flyc...