It is a small passerine with a slender build and predominantly yellowish-green plumage, brighter in adult males, especially on the head and breast. The back is olive-toned with fine dark streaks, and the wings show distinct brown striping, while females and juveniles display duller coloration. The bill is short, conical, and sturdy, well adapted for seed consumption.
Geographic distribution: It is widely distributed throughout South America, ranging from northern regions to central Argentina and Uruguay. The species is common in lowland areas and open landscapes, occurring in both natural habitats and human-modified environments.
Habitat: It mainly inhabits natural grasslands, cultivated fields, wet meadows, and the edges of water bodies, showing a high tolerance for disturbed habitats. It is frequently observed in rural areas, roadsides, and sites with low, scattered vegetation.
Feeding: Its diet consists primarily of grass seeds and other herbaceous plants, collected from the ground or vegetation. During the breeding season, it supplements its diet with insects and small invertebrates, which are essential for chick development.
Behavior: The species displays gregarious behavior outside the breeding season, forming large flocks, often mixed with other finches. It is diurnal and commonly perches on tall grasses or fences, where it delivers its sharp, repetitive song.
Nesting: Breeding takes place mainly during spring and summer. The bird builds a cup-shaped nest made of plant fibers and finely lined, usually placed in tall grasses or low shrubs. The clutch typically consists of several pale eggs with small dark markings, incubated mainly by the female.
Conservation status: It is classified as a species of Least Concern, with large and generally stable populations across its range. However, local declines may occur due to agricultural intensification and the loss of native grasslands.
Author of this compilation: EcoRegistros – 16/12/2025