En bref

• Scientific Name: Hemitriccus diops
• Spanish Name: Tirano-enano pechioso
• Famille : Tyrannidae
• Known Nicknames: Drab-breasted Tody-Tyrant, Drab-breasted Pygmy-tyrant
• Average Length: 9–10 cm / 3.5–4 in
• Average Weight: 7–9 g / 0.25–0.32 oz
• Key Feature: Olive-brown upperparts with a pale, unstreaked grayish-white throat and breast, and a small, straight bill
• Régime alimentaire principal : Principalement insectivore
• Range: Southeastern Brazil to eastern Paraguay and northeastern Argentina
• Habitat: Understory of humid Atlantic Forest, especially near bamboo thickets
• Structure sociale : Solitaires ou en couples
• Nesting/Breeding: Enclosed domed nest with side entrance, built in low vegetation or bamboo
• Statut de conservation : Préoccupation mineure (LC)
• Évolution démographique : En baisse

The Drab-breasted Pygmy-Tyrant (*Hemitriccus diops*) is a small, elusive passerine bird native to the Atlantic Forest of southeastern Brazil and northeastern Argentina. Despite its unassuming name, this species boasts a striking pair of pale yellow eyes that stand out against its otherwise drab olive-brown upperparts and grayish-white throat and breast. A subtle, pale supercilium and faint wing bars add delicate detail to its compact form, which measures only about 10 cm (4 inches) in length. One of its most special features is its distinctive, high-pitched song—a rapid, insect-like trill that often reveals its presence before it is seen, as it forages actively for small arthropods in dense understory vegetation. Its short, stubby bill and habit of perching upright give it a characteristic pygmy-tyrant profile, making it a rewarding sight for birdwatchers despite its camouflage.

Faits amusants

Despite its drab plumage, this tiny tyrant-flycatcher possesses a surprisingly loud, high-pitched song that sounds like a squeaky toy, often delivered from a concealed perch. It engages in a quirky “wing-flicking” display where it rapidly opens and closes one wing at a time, possibly to startle insects into moving. A master of vertical foraging, it will hang upside-down from thin branches like a chickadee to pluck prey from the undersides of leaves, a rare behavior among its flycatcher relatives.

Habitats et répartition

The Drab-breasted Pygmy-Tyrant inhabits the understory and edges of humid montane and lowland forests, as well as secondary growth and forest clearings. It is typically found in dense, tangled vegetation near streams or in areas with heavy moss and epiphyte growth, often at elevations between 200 and 1,200 meters. Its geographical range spans southeastern Brazil, from southern Bahia and Minas Gerais south through Rio de Janeiro, São Paulo, and Paraná, extending into eastern Paraguay and the extreme northeastern tip of Argentina (Misiones).

Comportements & Reproduction

The Drab-breasted Pygmy-Tyrant is generally solitary or found in pairs, with no complex social structure beyond the breeding bond. Mating appears to be monogamous for the season, with males establishing small territories and performing simple, repetitive vocal displays to attract a mate. Courtship involves the male singing from exposed perches and possibly engaging in short, fluttery flights near the female. Nesting is a unique strategy: the pair builds a domed, oven-shaped nest with a side entrance, often suspended from a thin branch or vine over water, using moss and plant fibers. The female typically lays two white eggs, and both parents share incubation and feeding duties. No elaborate cooperative breeding or extra-pair copulations have been documented, making their reproductive strategy relatively straightforward for a passerine.

Alimentation

The Drab-breasted Pygmy-Tyrant is an insectivorous bird, with its diet consisting almost entirely of small arthropods. It forages actively in the understory and mid-levels of humid forests, employing a sit-and-wait strategy where it makes short, sallying flights to snatch prey from the undersides of leaves or from the air. Interestingly, while many tyrant flycatchers focus on flying insects, this species is known to glean a significant portion of its food—such as small spiders, caterpillars, and beetles—directly from foliage rather than exclusively catching them in flight. Another notable fact is that it often joins mixed-species foraging flocks, allowing it to benefit from the disturbance caused by other birds, which flushes hidden insects out into the open for it to capture.

Couleurs

The Drab-breasted Pygmy-Tyrant is predominantly olive-brown above with a slightly paler, dull grayish-brown breast and a whitish belly. It has a subtle pale eyering and two faint buffy wingbars, with no bold markings. Its subdued, uniform coloration provides effective camouflage in the dim understory of its Atlantic Forest habitat.

Distribution Map

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

Détails de l'attraction

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