The Thrush-like Wren (*Campylorhynchus turdinus*) is a striking bird of South American lowland forests, named for its uncanny resemblance to a small thrush—a rarity among the typically barred and boldly patterned wrens. Reaching up to 22 centimeters long, it boasts a stout, slightly curved bill and a long, cocked tail, with plumage that is largely a warm, earthy brown above and a clean, white to buffy belly, subtly spotted on the breast. Its most special feature is its raucous, chattering song, often delivered in a synchronized duet by mated pairs, and it is also notable for its enormous, globular nests woven from sticks and grass, which hang conspicuously from tree branches like avian chandeliers.

Faits amusants

Despite its name, the Thrush-like Wren is not actually a thrush; its scientific name *Campylorhynchus turdinus* literally means "curved beak thrush-like," referencing its long, decurved bill which it uses to expertly pry insects from bark crevices. It is one of the largest wrens in the world, reaching up to 22 cm in length, and lives in noisy, highly social family groups of up to a dozen birds that communicate with a wide repertoire of harsh, chattering calls and duets. A quirky behavior is their habit of building large, domed, football-shaped nests with a side entrance, often placing them in exposed tree forks where they can be fiercely defended by the entire group.

Habitats et répartition

The Thrush-like Wren is found across a broad swath of central South America, with its range extending from southeastern Peru and northern Bolivia across much of Brazil into northeastern Argentina and eastern Paraguay. Its primary habitat is humid lowland forests, particularly along river edges and in gallery forests, though it also occurs in secondary growth, forest clearings, and wooded savannas like the Cerrado. The species avoids dense, closed-canopy rainforest interiors, instead favoring more open or disturbed woodlands with a dense understory, often near water sources. It is generally resident throughout its range, with no major migratory movements.

Comportements & Reproduction

Thrush-like Wrens are typically found in small, stable family groups, often consisting of a breeding pair and their offspring from previous broods. They exhibit cooperative breeding, where these older young assist in defending the territory and feeding new chicks. Their mating habits are monogamous, with pairs forming long-term bonds. A unique reproductive strategy is their construction of multiple bulky, domed nests with side entrances, sometimes built in close proximity; one is used for breeding while the others serve as roosting sites or decoys to confuse predators. The female lays a clutch of 2-3 eggs, and both parents, often aided by helpers, share incubation and feeding duties, leading to high fledgling success in their humid lowland forest habitats.

Alimentation

The Thrush-like Wren is primarily insectivorous, foraging actively in the mid-to-upper canopy and along branches for a wide variety of arthropods such as beetles, caterpillars, ants, spiders, and grasshoppers. Interestingly, while it gleans prey from leaves and bark like many wrens, it also frequently joins mixed-species foraging flocks, a behavior that helps it locate more food by following the flushing activity of other birds. Another notable dietary fact is that it will occasionally supplement its insect-heavy diet with small fruits and berries, particularly during the non-breeding season when insect prey may be less abundant.

Couleurs

The Thrush-like Wren has a brown crown and upperparts with faint dark barring, a white supercilium and throat, and heavily black-spotted white underparts. Its long tail is barred black and white, and the flanks are buffy. This bold, thrush-like pattern provides disruptive camouflage in dappled forest light, breaking up its outline against branches and foliage.