Phylloscartes virescens
The Olive-green Tyrannulet, *Phylloscartes virescens*, is a diminutive and often inconspicuous neotropical flycatcher, embodying the subtle charm of the Amazonian understory. Measuring a mere 11-12 cm (4.3-4.7 in) in length and weighing just 6-9 grams (0.2-0.3 oz), this tiny passerine is characterized by its overall olive-green plumage. Its upperparts are a dull olive, contrasting with a yellowish throat, breast, and belly, often streaked with olive on the flanks. Distinctive field marks incl...
Found primarily in subtropical and tropical moist lowland forests, including terra firme and várzea, as well as adjacent secondary growth and forest edges. Typically occurs from sea level up to elevations of approximately 1,000 meters (3,300 feet).
Feeds predominantly on small arthropods, including a variety of insects (such as flies, beetles, and caterpillars) and spiders. Forages by active gleaning and short aerial sallies from foliage and twigs.
The Olive-green Tyrannulet is a highly active and often restless bird, typically observed flitting quickly through the mid-to-upper strata of the forest canopy. Its daily activity patterns are primarily diurnal, with continuous foraging throughout the daylight hours. It employs a mixed foraging s...
The Olive-green Tyrannulet has a broad distribution across the Amazon Basin and adjacent lowlands of northern South America. Its breeding range extends from southeastern Colombia, eastern Ecuador, eastern Peru, and northern Bolivia, eastward through vast areas of western and southern Brazil. It i...
Least Concern
- Despite its small size, the Olive-green Tyrannulet is a highly effective insect predator, consuming thousands of small arthropods annually. - It is a quintessential member of Amazonian mixed-species foraging flocks, often acting as a 'nuclear species' that other birds follow. - Its scientific g...