Black-backed grosbeak

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Black-backed grosbeak
Black-backed Grosbeak (Pheucticus aureoventris) (8077568632).jpg
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Order: Passeriformes
Family: Cardinalidae
Genus: Pheucticus
Species:
P. aureoventris
Binomial name
Pheucticus aureoventris
Pheucticus aureoventris map.svg
  Year-round
  Non-breeding

The black-backed grosbeak (Pheucticus aureoventris) is a bird in the family Cardinalidae, the cardinals or cardinal grosbeaks. It is found in Argentina, Brazil, Bolivia, Colombia, Ecuador, Paraguay, Peru, and Venezuela. They are often kept as cagebirds. [2] [3]

Contents

Taxonomy and systematics

The black-backed grosbeak has five recognized subspecies: [2]

There is some evidence that the black-backed grosbeak may be paraphyletic with respect to golden grosbeak (Pheucticus chrysogaster). Their ranges overlap in Peru. [4] [3] [5] [6]

Description

The black-backed grosbeak is approximately 22 cm (8.7 in) long and weighs 43.8 to 66.2 grams (1.54 to 2.34 oz). All of the subspecies except P. a. crissalis are very similar. The males' upperparts are black with a yellow shoulder patch; the closed wings show white patches. The chin, throat, and upper breast are also black. The lower breast and belly are bright yellow with a variable amount of black flecking on the sides and flanks. The female is similar but browner and has yellow mottling on the upperside and dusky speckles on the underside. P. a. crissalis differs mainly in having a yellow chin, throat, and upper breast where the other subspecies are black. [3]

Distribution and habitat

The black-backed grosbeak is a bird of the eastern Andes. The subspecies are found thus. All except the nominate are believed to be sedentary. [2] [3]

The black-backed grosbeak inhabits dry to very dry woodland (scrubby to open) and is often found in gardens. In Venezuela it generally ranges in elevation from 1,450 to 2,000 m (4,760 to 6,560 ft) and occasionally up to 3,700 m (12,100 ft). In Colombia it is found between 1,700 and 3,000 m (5,600 and 9,800 ft) and in Peru mostly from 1,200 to 3,200 m (3,900 to 10,500 ft). At the southern end of its range in can be found as low as 600 m (2,000 ft). [3]

Behavior

Feeding

The black-backed grosbeak's diet is berries, seeds, flowers, and insects. It usually forages singly or in pairs, but several may gather in a fruiting tree. It mostly forages high up in trees but can be seen at any level. It does not join mixed-species foraging flocks. [3]

Breeding

Little information about the black-backed grosbeak's breeding phenology has been published. Evidence or proof of breeding such as adults with enlarged gonads, nests with eggs, and a fledged chick have been noted between November and January. Nests are an open cup made of vine stalks and lined with fine fibers placed up to 3 m (9.8 ft) high in a shrub. The plush-crested jay (Cyanocorax chrysops) is a frequent predator at the nest. [3]

Vocalization

The black-backed grosbeak's song is "a rich, melodious series of whistled notes". Its call is "a sharp 'keck'". [3]

Status

The IUCN has assessed the black-backed grosbeak as being of Least Concern. [1] It varies from uncommon to common across its range, but is trapped for the cagebird trade. [3]

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References

  1. 1 2 BirdLife International (2018). "Pheucticus aureoventris". IUCN Red List of Threatened Species . 2018: e.T22723810A132168646. doi: 10.2305/IUCN.UK.2018-2.RLTS.T22723810A132168646.en .
  2. 1 2 3 Gill, F.; Donsker, D.; Rasmussen, P. (January 2021). "IOC World Bird List (v 11.1)" . Retrieved 14 January 2021.
  3. 1 2 3 4 5 6 7 8 9 Brewer, D. and E. de Juana (2020). Black-backed Grosbeak (Pheucticus aureoventris), 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.blbgro2.01 retrieved 19 May 2021
  4. Pulgarín-R., P.C., Smith, B.T., Bryson, R.W., Spellman, G.M. and Klicka, J. (2013). Multilocus phylogeny and biogeography of the New World Pheucticus grosbeaks (Aves: Cardinalidae). Mol. Phylogenet. Evol. 69(3): 1222–1227.
  5. Remsen, J. V., Jr., J. I. Areta, E. Bonaccorso, S. Claramunt, A. Jaramillo, D. F. Lane, J. F. Pacheco, M. B. Robbins, F. G. Stiles, and K. J. Zimmer. Version 19 January 2021. A classification of the bird species of South America. American Ornithological Society. https://www.museum.lsu.edu/~Remsen/SACCBaseline.htm retrieved 19 January 2021
  6. Brewer, D. (2020). Golden Grosbeak (Pheucticus chrysogaster), 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.gobgro1.01 retrieved 19 May 2021