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Thick-billed Saltator Saltator maxillosus Scientific name definitions

David Brewer
Version: 1.0 — Published March 4, 2020
Text last updated January 1, 2011

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Introduction

Almost endemic to southeast Brazil, where it ranges as far north as the state of Espírito Santo, the Thick-billed Saltator is also found in extreme northeast Argentina and is generally uncommon and rather local. This saltator has been recorded to 2200 m, but is principally montane in the north of its range, and the species is typically found in the canopy of mature forest. Well named for its heavy bill, which has a distinctive orange-colored base, the upperparts are grayish above in males (but olive-colored in females) and buffy grayish below, but the other most striking features are the buff throat, bordered by a black malar stripe, and the white supercilium.

Field Identification

21 cm; 48–54 g (four birds Brazil). Male has lores, area around eye and face dark brownish-grey, long white super­cilium; crown and upperparts dark brownish-grey, upper­wing-coverts with mostly concealed dusky areas; primaries blackish-grey with narrow pale grey edgings on outer webs; rectrices dull blackish-grey; chin and throat off-white with variable orange-buff to clay-coloured tinge, diffuse blackish malar stripe; underparts buffy grey, vent and undertail-coverts clay-coloured; iris dark brown; bill heavy, dark, some orange at base; legs greyish. Female is olive above, including ear-coverts, with white supercilium, blackish malar stripe, throat buffy; otherwise much as for male but with mostly blackish bill. Juvenile has green upper­parts, all-dark bill.

Systematics History

Supposed close relationship with S. nigriceps and S. aurantiirostris rejected by latest molecular evidence (1); recent studies state that there is little or no interbreeding with latter, as earlier reported. Monotypic.

Subspecies

Monotypic.

Distribution

SE Brazil (extreme SE Bahia and extreme E Minas Gerais S to Paraná and Rio Grande do Sul) and extreme NE Argentina (Misiones).

Habitat

Mostly canopy of montane humid forest and woodland borders; to 2200 m, rarely down to sea-level.

Movement

Probably largely sedentary; tends to occur more frequently at lower altitudes during austral winter.

Diet and Foraging

Unusually for a passerine, seems to be mainly folivore, especially during dry season when fruit less available. Diet, based on dry-season observations, includes leaves of several families of trees (Melastomataceae, Solanaceae, Rubiaceae and Asteraceae, among others), as well as fruits of various species (2). Additional observations throughout the year confirm leaves as main food items (including leaves of bamboo belonging to the genera Chusquea and Merostachys), although fruits and flowers are also commonly consumed and there are two records of preying on caterpillars (3). During breeding season other members of genus tend to eat more animal matter. Usually in pairs; often joins mixed-species flocks. Forages at all levels, mostly at higher ones.

Sounds and Vocal Behavior

Song a simple series of 4 loud notes, the third higher in pitch, “teeu-teeu-tew-tcheeuw”; call a high, clear “wicwic”.

Breeding

Nest a cup made from roots, dry leaves and other vegetation, lined with fine fibres, rootlets and similar fine material, situated at low to medium height in tree or bush. Clutch 2–3 eggs, pale blue with brown or black markings. No other information.

Not globally threatened (Least Concern). Uncommon. Formerly occurred also in E Paraguay (Alto Paraná), but no records since early decades of 20th century. Much of this species’ habitat has been destroyed during last century. Occurs in some protected areas, including Itatiaia National Park, in Brazil.

Distribution of the Thick-billed Saltator - Range Map
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Distribution of the Thick-billed Saltator

Recommended Citation

Brewer, D. (2020). Thick-billed Saltator (Saltator maxillosus), version 1.0. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.thbsal1.01
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