Elaenia frantzii
The Mountain Elaenia (Elaenia frantzii) is a quintessential small Neotropical tyrant flycatcher, recognized by its understated yet distinctive appearance. Averaging 14-16 cm (5.5-6.3 in) in length and weighing 17-22 grams, this species exhibits a dull olive-green plumage above, contrasting with a paler, often yellowish-white, throat and breast, and a greenish-yellow belly. Key field marks include a prominent white eye-ring, two yellowish-white wing bars, and a subtle crest, which it often rai...
This species primarily inhabits humid montane evergreen and cloud forests, ranging from forest interior to edges and clearings. It is found at elevations typically between 1,200 and 3,000 meters (4,000-10,000 feet) above sea level.
Their diet consists mainly of small arthropods, particularly insects, which they glean from foliage or catch in short aerial sallies, supplemented by small berries and fruits.
Mountain Elaenias are diurnal and generally inconspicuous, spending their days actively foraging, often perching upright and salllying out for insects or gleaning fruits from foliage. They are primarily solitary or found in pairs, though they may occasionally join mixed-species flocks outside the...
The Mountain Elaenia has an extensive distribution from southern Mexico south through Central America and into the Andes of South America. Its breeding range is effectively its year-round range as it is a resident species. The nominate subspecies, *Elaenia frantzii frantzii*, spans from the highl...
Least Concern
- The Mountain Elaenia is named after Alexander von Frantzius, a 19th-century German physician and naturalist who made significant contributions to the study of Costa Rican flora and fauna. - Despite its drab appearance, its distinctive white eye-ring and subtle crest are key identifiers, especia...