Thick-billed Saltator

Characterized by its robust body and a total length ranging between 20 and 21 centimeters, this medium-sized passerine weighs around 48 to 55 grams. The most striking feature of the species is its massive, thick, and highly curved bill, which displays a vibrant orange-yellow coloration in mature males, often with a darker culmen, while females and juveniles present a duller, more olive-greenish bill. Its upperparts are predominantly slate-gray, blending into a greenish-olive back and rump. On its head, a prominent and contrasting white to cream-colored supercilium extends from the base of the bill past the eye. The throat is a buffy-white or pale cream, framed by dark, thin malar stripes, while the lower underparts transition into rich ochreous-buff and cinnamon tones towards the belly.

Geographical distribution: Restricted to the temperate and subtropical zones of east-central South America. Its range encompasses southeastern Brazil (from the highlands of Minas Gerais, Espírito Santo, and Rio de Janeiro, southward through São Paulo, Paraná, and Santa Catarina to Rio Grande do Sul), eastern Paraguay, and the far northeastern portion of Argentina, primarily concentrated in the humid forests of the Misiones province.

Habitat: Primarily inhabits the canopy and middle strata of montane humid forests, Atlantic forest edges, and mature secondary woodlands. It is heavily associated with mountainous terrains ranging from 1,000 to 2,200 meters above sea level, although in the southern reaches of its distribution, it can adapt to much lower elevations and coastal shrublands.

Feeding: Exhibits an omnivorous diet with a strong emphasis on frugivory and folivory. Its powerful beak is adapted to crushing and processing diverse wild fruits, seeds, tender plant buds, young leaves, and flower petals. During the breeding season, it actively supplements its diet with small invertebrates and insects to meet the high protein demands of growing chicks.

Behavior: This bird maintains a secretive and mostly solitary lifestyle, though it is frequently seen in pairs during the breeding period. It prefers to remain concealed within dense foliage, making it hard to spot. However, its presence is easily detected by its loud, melodious, and rhythmic song, consisting of whistled phrases delivered from high perches. It rarely ventures to the forest floor, preferring to forage in the middle and upper canopies.

Nesting: Breeding occurs during the southern spring and summer months. The species constructs a sturdy, open-cup nest made of dry twigs, roots, plant fibers, and dead leaves, carefully hidden within dense shrubbery or the low forks of tree branches. The clutch consists of 2 to 3 pale blue-green eggs, speckled with dark brown or black scrawls and spots near the larger end. Incubation, performed almost exclusively by the female, lasts for about 13 to 14 days, after which both parents participate in feeding the altricial nestlings of Saltator maxillosus.

Conservation status: Currently classified as Least Concern (LC) on the IUCN Red List. Despite this status, its wild populations are affected by the ongoing destruction and fragmentation of the Atlantic Forest due to logging and agriculture, as well as the significant pressure from illegal trapping for the cage-bird trade, driven by its highly appreciated singing abilities.