Definition
The green-backed becard (Pachyramphus viridis) is a species of passerine bird in the family Tityridae. It is native to the tropical lowland forests of northern South America.
Overview
The green-backed becard inhabits a range that includes the Amazon Basin and adjacent regions of Brazil, Colombia, Ecuador, Peru, Bolivia, Venezuela, the Guianas, and northern Argentina. It occupies humid evergreen forest, forest edges, and secondary growth, typically from sea level up to about 1,200 m elevation. The species is classified as “Least Concern” by the International Union for Conservation of Nature (IUCN) owing to its relatively wide distribution and stable population trends.
Etymology / Origin
- Becard is derived from the French “bec” meaning “beak” and the suffix “‑ard,” a noun-forming element indicating a person or thing associated with the root; the term was historically applied to several members of the genus Pachyramphus.
- The genus name Pachyramphus comes from the Ancient Greek words pachys (“thick”) and rhamphos (“beak”), referring to the bird’s comparatively robust bill.
- The specific epithet viridis is Latin for “green,” describing the bird’s predominant upper‑back coloration.
Characteristics
- Size: Approximately 16 cm (6.3 in) in length; weight around 20–25 g.
- Plumage: Upperparts are olive‑green, especially the back and wing coverts. The head is grayish‑brown with a subtle pale supercilium; the throat and breast are whitish to pale gray, while the belly may show a faint buff tint. The tail is dark with a slight greenish hue.
- Bill: Short, stout, and slightly hooked, characteristic of the genus.
- Vocalizations: Emits a series of soft, whistled notes and a repetitive “tsee-tsee” call, often heard from concealed perches within the canopy.
- Behavior: Primarily insectivorous, foraging by sallying from low to mid‑level perches to capture arthropods in mid‑air or gleaning from foliage. It occasionally joins mixed‑species foraging flocks. Breeding involves constructing a cup‑shaped nest suspended from a thin branch; clutch size is typically two eggs.
- Conservation: No major threats are currently identified, though localized habitat loss due to deforestation could affect populations in the future.
Related Topics
- Family Tityridae (tityras, mourner, and becards)
- Genus Pachyramphus – other becard species such as the russet‑crowned becard (Pachyramphus cinnamomeus) and the crested becard (Pachyramphus major)
- Amazon rainforest ecosystem and its avian diversity
- IUCN Red List categories and criteria for bird conservation assessments.