<trp-post-container data-trp-post-id='360697'>Bluish-gray Saltator

Saltator coerulescens

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En bref

  • Scientific Name: Saltator coerulescens
  • Spanish Name: Saltator grisáceo
  • Famille : Thraupidae
  • Known Nicknames: Greyish Saltator, Grey Saltator
  • Average Length: 20–22 cm / 7.9–8.7 in
  • Average Weight: 40–55 g / 1.4–1.9 oz
  • Envergure : N/A
  • Key Feature: Thick, finch-like bill and bluish-grey upperparts
  • Primary Diet: Omnivore (mainly fruits, seeds, and insects)
  • Range: Central America to northern and central South America (from Mexico to Bolivia and Brazil)
  • Habitat: Tropical and subtropical lowland forests, forest edges, and second-growth woodlands
  • Structure sociale : Solitaires ou en couples
  • Nesting/Breeding: Cup-shaped nest in a tree or shrub
  • Statut de conservation : Préoccupation mineure (LC)
  • Évolution démographique : Stable

The Bluish-gray Saltator (*Saltator coerulescens*) is a sleek, medium-sized songbird of Central and South America, named for its subtle, elegant plumage: a soft, slate-blue back and head that fades into a paler, grayish-white throat and belly. Its most distinctive feature is a bold, white supercilium (eyebrow stripe) that contrasts sharply with a dark, thick bill—a powerful tool for crushing seeds, fruits, and buds, though it also nimbly snatches insects. Unique among saltators, this species is a vocal virtuoso, often delivering a rich, melodious, and repetitive song from exposed perches, with pairs frequently duetting in a synchronized, almost mechanical call-and-response. Despite its somewhat drab name, the bird’s bright chestnut undertail coverts flash unexpectedly in flight, adding a hidden splash of color to its otherwise refined, monochrome appearance.

Faits amusants

Despite its name, the bluish-gray saltator isn’t always that color; birds in the southern part of its range often show a distinctly browner or olive tint, making field identification a puzzle. It has a bizarre habit of clinging upside-down to palm fronds like a titmouse to pry insects from leaf undersides. Its song is a loud, rhythmic series of “chuck-chuck-chu-wee” notes that sounds uncannily like a human whistling for a dog. Unlike most songbirds, it will aggressively chase off much larger birds, including hawks, if they venture near its nest, and it occasionally eats small lizards or frogs to supplement its mostly fruit-and-seed diet.

Habitats et répartition

The Bluish-gray Saltator occupies a broad range of open and semi-open habitats across much of South America. It is commonly found in dry and moist lowland forests, forest edges, second-growth woodlands, scrublands, savannas with scattered trees, and areas near rivers or marshes. It also adapts well to human-modified landscapes such as plantations, gardens, and agricultural clearings, typically avoiding dense, humid primary forest interiors. Its geographical range extends from central Colombia and Venezuela through the Guianas, Ecuador, Peru, Bolivia, and Brazil, south to northern Argentina, Paraguay, and Uruguay, with an isolated population in southern Brazil.

Comportements & Reproduction

The Bluish-gray Saltator is generally observed in pairs or small family groups, suggesting a monogamous social structure that persists through the breeding season. Mating begins with vocal duets between the bonded pair, reinforcing their territory and partnership. The species builds a cup-shaped nest of twigs and grasses, often placed in dense foliage. A unique reproductive strategy is the high level of biparental care; both parents share incubation duties for the typical clutch of two to three eggs, and they cooperatively feed the chicks with a diet primarily of fruit and insects. This cooperative effort likely reduces predation risk and increases fledgling success in their scrub and woodland habitats.

Alimentation

The Bluish-gray Saltator is primarily a frugivore and granivore, with its diet consisting largely of a wide variety of ripe fruits, berries, and seeds, which it plucks directly from trees and shrubs. It also consumes significant amounts of tender buds, flowers, and nectar, particularly during the dry season when fruit is less abundant. Interestingly, this species is known to occasionally supplement its plant-based diet with small arthropods such as insects and spiders, especially during the breeding season to provide extra protein for its chicks. Another notable fact is that it often forages in pairs or small family groups, methodically gleaning food from the mid-canopy to the understory, and it has been observed following mixed-species flocks to take advantage of disturbed insects or fallen fruit.

Couleurs

The Bluish-gray Saltator is predominantly a soft, uniform bluish-gray above, with a paler, whitish-gray throat and breast, and a buffy or cinnamon wash on the belly and undertail coverts. Its most distinctive features are a bold white supercilium (eyebrow stripe) contrasting with a dark gray lores and a blackish malar stripe (mustache mark) bordering the white throat. It lacks conspicuous camouflage adaptations, relying on its muted, overall grayish coloration to blend into the dappled light of its forest edge and scrub habitats.

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