Green-barred woodpecker

The Green-barred woodpecker (Colaptes melanochloros), also known as the Green-barred flicker, is a species of bird belonging to the woodpecker family Picidae. It is distributed across a wide range in South America, found in Argentina, Bolivia, Brazil, Paraguay, and Uruguay. This species exhibits adaptability, inhabiting a variety of environments from arid desert scrub and brushland to open woodlands, savannas, and humid subtropical forests, primarily in lowland and foothill regions.

Description and Taxonomy

Measuring between 27 and 30 cm in length and weighing 80 to 178 grams, the Green-barred woodpecker displays distinct plumage. Adults typically have yellowish-green upperparts marked with dark brown bars, while their underparts are pale green, often with black spots concentrated on the breast. Males and females share similar plumage, differing mainly on their heads; adult males of the nominate subspecies have a black forehead and red hindcrown, with a red malar stripe. Females have red only on the hindcrown, and their malar stripe is black with white streaks. The species has a long black bill, brown or chestnut-brown irises, and gray legs with a greenish or yellow tinge. Johann Friedrich Gmelin formally described the species in 1788, initially placing it in the genus Picus before it was later moved to Chrysoptilus and subsequently merged into the genus Colaptes based on molecular phylogenetic studies. Five subspecies are recognized, with some historical divisions separating groups like the "golden-breasted woodpecker."

Behavior and Ecology

The diet of the Green-barred woodpecker consists almost entirely of ants, including their larvae and pupae, supplemented by other insects such as termites and Orthoptera. Fruits and berries are also consumed, and the species is recognized as a principal seed disperser for certain plants. They forage individually or in pairs, sometimes associating with other woodpecker species. While all subspecies forage in trees, the "golden-breasted" subspecies are noted to feed more frequently on the ground.

Reproduction and Habitat

Nesting occurs from August to January in the southern parts of its range, with nesting starting earlier in the north. The Green-barred woodpecker excavates its nest cavity, typically in dead trees or stumps, but also in palms, cacti, or utility poles, usually at heights of 2 to 6 meters above the ground. A clutch consists of four eggs, and both parents share the responsibilities of incubation and feeding the nestlings. The species is generally a year-round resident, although the southernmost populations are at least partly migratory.

Conservation Status

The Green-barred woodpecker is currently listed as 'Least Concern' by the IUCN. This assessment is based on its extensive geographic distribution, a population that is believed to be stable, and the absence of significant immediate threats. The species is found in numerous protected areas and is considered common or reasonably common throughout most of its range.