En bref

• Scientific Name: Lepidocolaptes falcinellus
• Spanish Name: Trepatroncos escamado
• Family: Furnariidae
• Known Nicknames: Scalloped Woodcreeper
• Average Length: 18–20 cm / 7–8 in
• Average Weight: 25–35 g / 0.9–1.2 oz
• Envergure : N/A
• Key Feature: Scalloped pattern on breast and belly formed by dark-edged pale feather centers
• Régime alimentaire principal : Insectivore
• Range: Southeastern Brazil, eastern Paraguay, and northeastern Argentina
• Habitat: Humid lowland and montane forests, forest edges, and secondary growth
• Structure sociale : Solitaires ou en couples
• Nesting/Breeding: Tree cavities
• Statut de conservation : Préoccupation mineure (LC)
• Évolution démographique : Stable

The Scalloped Woodcreeper (*Lepidocolaptes falcinellus*) is a slender, cryptically colored bird found in lowland forests of South America, renowned for its masterful bark-gleaning technique. Its general appearance is a warm brown above with a distinctive, pale buffy throat and breast heavily marked with fine, dark, scalloped crescents—the feature that gives it its name. A unique characteristic is its long, slightly decurved bill, perfectly adapted for probing into crevices and epiphytes to extract insects and spiders, much like a tiny woodpecker but with a more delicate, probing strategy. Special features include a stiff, pointed tail used as a prop against tree trunks as it spirals upward, and a loud, descending whistle that often reveals its presence before the bird itself is seen. This inconspicuous yet industrious forager is a vital part of the forest ecosystem, turning over bark and dead wood in a constant search for prey.

Faits amusants

Despite its name, the Scalloped Woodcreeper is a surprisingly acrobatic forager, often hanging upside-down like a chickadee to pry bark loose—a behavior rare among its typically upright-climbing relatives. It possesses a uniquely long, decurved bill that it uses like tweezers to extract spiders and insect eggs from deep crevices, and it sometimes joins mixed-species flocks, acting as a noisy sentinel that alerts others to predators with harsh, scolding calls. One quirky habit is its tendency to “drum” on hollow trunks with its bill not for food, but to establish territory, producing a rapid, resonant tap-tap-tap that echoes through the forest.

Habitats et répartition

This species is primarily associated with humid lowland and foothill forests, including both terra firme and várzea, as well as mature secondary growth and forest edges. It shows a preference for dense, tangled vegetation and is often found in areas with abundant epiphytes and mossy trees, particularly near streams or swampy ground. Its geographical range is restricted to a relatively small area of southeastern South America, encompassing eastern Paraguay, northeastern Argentina (Misiones and Corrientes), and adjacent southeastern Brazil (from São Paulo south into Rio Grande do Sul and Santa Catarina).

Comportements & Reproduction

The Scalloped Woodcreeper is typically solitary or found in pairs, maintaining a monogamous bond during the breeding season. Mating involves vocal duets and mutual chasing displays through the forest canopy. Nesting is unique among woodcreepers, as they excavate cavities in arboreal termite nests rather than in dead wood, providing a secure, insulated environment for the young. The female lays 2-3 white eggs, and both parents share incubation and feeding duties, with the male often guarding the nest entrance. There is no cooperative breeding observed, and pairs defend a small territory around the nest site.

Alimentation

The Scalloped Woodcreeper (Lepidocolaptes falcinellus) is an insectivorous bird whose diet consists almost exclusively of small arthropods gleaned from tree bark and epiphytes. It forages by hitching up trunks and along branches, using its long, decurved bill to probe into crevices, moss, and bromeliads for hidden prey. Its primary food sources include beetles, ants, spiders, caterpillars, and other small invertebrates. Interestingly, it often follows mixed-species foraging flocks, where it takes advantage of prey flushed by other birds, and it has been observed using its stiff tail feathers as a brace while hammering at bark to extract wood-boring larvae. Unlike some woodcreepers, it rarely descends to the ground for food, focusing its entire feeding activity on the vertical surfaces of trees in the understory to canopy of humid forests.

Couleurs

The Scalloped Woodcreeper is predominantly brown with a distinctive scalloped or ladder-like pattern of pale buff streaks and dark edging on its underparts, head, and throat. Its upperparts are a warmer, rufous-brown, with a long, decurved bill and a pale supercilium. This cryptic coloration blends seamlessly with tree bark, providing excellent camouflage as it hitches up trunks.

Distribution Map

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

Détails de l'attraction

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