- Red-and-black Grosbeak
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Red-and-black Grosbeak Periporphyrus erythromelas Scientific name definitions

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

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Introduction

The sole member of the genus Periporphyrus was long considered to be confined to humid lowland forests of far northeast South America, where it ranges from extreme southeast Venezuela through the Guianas to east Amazonian Brazil. However, it has recently been found much farther west south of the Amazon in south central Amazonian Brazil. Both sexes have a massive, all-black bill, while males are largely carmine-red above, becoming more rose-red below, with a black head and throat. Females are marginally less distinctive, being principally yellow-green with a black head. They might be confused with the smaller Yellow-green Grosbeak (Caryothraustes canadensis), but the black is confined to the foreface. This striking bird is generally rare and not easily found throughout its range, being usually seen alone or in well-spaced birds. Very little is known concerning the species’ biology and life history.

Field Identification

20·5 cm; one male 48 g. Male has entire head, chin and throat black; red nape collar separating black of head from deep reddish of upperparts; wing-feathers blackish-brown with reddish-brown outer webs; rectrices dull reddish; chest and belly bright red, becoming slightly duller on vent; iris dark brown, black or blue-black; bill black, lower mandible silver-grey or pale blue-grey with black on distal portion and along cutting edge; legs dark greyish-black or pinkish-grey. Female has crown and face to throat dull black; upperparts dark greenish-yellow, fine darker streaks on nape; primaries and secondaries blackish-brown with broad dull yellowish-green on outer webs (giving closed wing an overall dark yellowish-green colour); rectrices dull dark greenish-brown; underparts yellowish-green, diffusely mottled darker, some females (presumably older ones) having large orange-red flecks on underparts; bare parts similar to those of male. Immature male is generally duller than adult, with head dull black, underparts orange-red, borders of black on throat less clear-cut.

Systematics History

Monotypic.

Subspecies

Monotypic.

Distribution

Extreme E Venezuela (E Bolívar, E Delta Amacuro), N & C Guyana, Suriname (except extreme SW), French Guiana, and N Brazil (Amapá S to E Pará and N & W Maranhão; also isolated in NE & S (1) Amazonas and W Pará; recently recorded in Rondônia (2) ).

Habitat

Mature lowland humid forest, terra firme, also seasonally flooded forest; sea-level to 1000 m.

Movement

Apparently sedentary; ranges widely within its territory.

Diet and Foraging

Little published information; stomach contents of one specimen described as arthropods, of another insects 40% and seeds 60%. In pairs and family groups; does not, apparently, join mixed-species flocks. Forages in shady lower levels of forest, occasionally into subcanopy; often wary.

Sounds and Vocal Behavior

Song an exceptionally sweet series of halting phrases that slide up and down, given slowly with pauses; typically consists of variations built around 2–3 standard phrases. Both sexes sing. Call a high-pitched, sharp “spink”.

Breeding

No information.
Not globally threatened. Almost always rare and at low density and in small numbers throughout its range. Rare in French Guiana. Not recorded in Suriname until 1972, although now regular in Brownsberg Reserve. Appears not to adapt to man-modified habitats.
Distribution of the Red-and-black Grosbeak - Range Map
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  • Year-round
  • Migration
  • Breeding
  • Non-Breeding
Distribution of the Red-and-black Grosbeak

Recommended Citation

Brewer, D. (2020). Red-and-black Grosbeak (Periporphyrus erythromelas), 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.rabgro1.01
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