En bref

• Scientific Name: Elaenia sordida
• Spanish Name: Elenia cabecigrís
• Famille : Tyrannidae
• Known Nicknames: Sordid Elaenia, Small-headed Elaenia
• Average Length: 12.5 cm / 4.9 in
• Average Weight: 12 g / 0.42 oz
• Envergure : N/A
• Key Feature: Small, rounded head with a short, thin bill
• Primary Diet: Primarily Frugivore (also insectivorous)
• Range: Eastern Andes of Peru and Bolivia
• Habitat: Montane cloud forest edges and clearings
• Structure sociale : Solitaires ou en couples
• Nidification/Reproduction : Nid en forme de coupe ouverte dans la fourche d'un arbre
• Statut de conservation : Préoccupation mineure (LC)
• Évolution démographique : Stable

The Small-headed Elaenia (*Elaenia sordida*) is a subtly captivating flycatcher of South America’s montane forests, named for its proportionally small, rounded head that gives it a gentle, almost doleful expression. A uniform olive-brown above and pale yellowish below, it is most distinguished by its prominent, bushy white crest—which it often raises into a feathered crown—and a faint, whitish eye-ring that softens its features. Unlike many of its boisterous relatives, this elaenia is a quiet, deliberate forager, frequently seen sallying from exposed perches to snatch insects or pluck small fruits. Its most special feature is a complex, whistled song that descends in a melancholy cadence, a haunting sound that often betrays its presence before the bird’s subtle plumage is ever spotted among the dense foliage.

Faits amusants

Despite its name, the Small-headed Elaenia has a surprisingly large, expressive crest that it frequently raises and lowers like a feathered question mark, often while flicking its wings in a nervous, twitchy motion. It is a master of vocal mimicry, capable of incorporating the calls of other birds into its own complex, melancholic song, sometimes fooling even experienced ornithologists. An interesting adaptation is its habit of building a shallow, cup-shaped nest so flimsy that you can often see the eggs through the bottom, relying on dense, thorny vegetation for protection rather than structural integrity. To deter predators, it will perform a “rodent run” distraction display, dragging its wings and scurrying along a branch like a mouse.

Habitats et répartition

The Small-headed Elaenia occupies a relatively restricted range in south-eastern South America, primarily found in the Atlantic Forest biome of eastern Brazil, extending into parts of eastern Paraguay and the extreme north-eastern tip of Argentina (Misiones Province). Its habitat is closely tied to humid, montane forests and cloud forests, typically at elevations between 800 and 2,200 meters. It prefers the interior of dense, mature forest with a closed canopy, often frequenting the understory and midstory layers, and is also found in adjacent tall secondary growth and forest edges, but generally avoids open or heavily degraded areas.

Comportements & Reproduction

The Small-headed Elaenia is generally solitary or found in loose pairs during the breeding season, with no complex social structure observed outside of parental care. Mating appears to be monogamous within a given season, though detailed courtship displays are poorly documented. The female builds a small, cup-shaped nest using moss and plant fibers, typically placed in a tree fork, where she lays two eggs. Incubation is performed solely by the female, while both parents share feeding duties for the altricial young. A notable reproductive strategy is the species’ tendency to breed during the peak of local fruit availability, ensuring a steady food supply for nestlings, and they may produce a second brood if conditions remain favorable. No unique or extreme reproductive adaptations, such as cooperative breeding or brood parasitism, have been reported for this species.

Alimentation

The Small-headed Elaenia is primarily a frugivore, with its diet consisting almost entirely of small, soft fruits and berries, which it plucks directly from trees and shrubs while perched. A particularly interesting aspect of its diet is its strong reliance on the fruits of mistletoe plants (family Loranthaceae), making it a key seed disperser for these parasitic species. Unlike many other flycatchers, it rarely catches insects in flight, though it will occasionally glean small arthropods from foliage, especially during the breeding season when extra protein is needed for chick development. This specialization on fruit, particularly mistletoe, distinguishes its feeding habits from most other elaenia species.

Couleurs

The Small-headed Elaenia has predominantly olive-brown upperparts and a pale grayish-white throat and belly, with a subtle yellowish wash on the lower belly and undertail coverts. Its most distinctive feature is a faint, incomplete white eye-ring and two pale whitish wing bars on the dark wings; there is no bold crest or strong facial pattern. This drab, uniform coloration provides effective camouflage in the dappled light of its forest-edge and woodland habitats.

Distribution Map

Places linked to this species. A sighting is never guaranteed.

Détails de l'attraction

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