Diamantina sabrewing

The Diamantina sabrewing (Campylopterus diamantinensis) is a Near-threatened species of hummingbird in the "emeralds", tribe Trochilini of subfamily Trochilinae. It is endemic to southeastern Brazil.[3][4]

Diamantina sabrewing
CITES Appendix II (CITES)[2]
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Clade: Dinosauria
Class: Aves
Clade: Strisores
Order: Apodiformes
Family: Trochilidae
Genus: Campylopterus
Species:
C. diamantinensis
Binomial name
Campylopterus diamantinensis
Ruschi, 1963


Taxonomy and systematics

The Diamantina sabrewing was formerly considered to be a subspecies of the grey-breasted sabrewing (Campylopterus largipennis). In a 2017 paper Lopes et al. provided convincing evidence that it deserved species status.[5] Starting in 2020 the South American Classification Committee of the American Ornithological Society and worldwide taxonomic systems agreed, recognizing the Diamantina sabrewing. It is monotypic.[6][3][7][4]

Description

The Diamantina sabrewing is a large hummingbird, about 13.4 cm (5.3 in) long. Males weigh about 8.5 g (0.30 oz) and females 8.0 g (0.28 oz). The sexes have almost identical plumage including a white spot behind the eye. Their bill is long and slightly decurved; the maxilla is black and the mandible whitish with a brownish tip. Male's upperparts are dark grass green with a darker crown and their underparts dark gray. Their tail's central two pairs of feathers are metallic bronze-green. The other three pairs have bright bronze-green bases that grades through dark olive gray to a wide white tip. The female differs only by being a slightly duller green.[8]

Distribution and habitat

The Diamantina sabrewing is found only in the Espinhaço Range of southeastern Brazil's Minas Gerais state. It inhabits forested streams and ravines in campos rupestre, a high elevation, dry, fire-prone biome between 1,000 and 2,000 m (3,300 and 6,600 ft). The type locality is Córrego das Pedras in the municipality of Diamantina.[5][8]

Behavior

Movement

The Diamantina sabrewing's movements, if any, have not been documented.[8]

Feeding

The Diamantina sabrewing's foraging strategy and diet are not known but are assumed to be similar to those of its former "parent" the grey-breasted sabrewing.[8]

Breeding

Nothing is known about the Diamantina sabrewing's breeding phenology.[8]

Vocalization

The Diamantina sabrewing's vocalizations are very poorly known. As of mid-2022 xeno-canto has no recordings and the Cornell Lab of Ornithology's Macaulay Library only two.[8] The species' original description noted that its alarm call is "a strong, rapidly repeated single note: ché, ché, ché, ché, ché, ché."[9]

Status

The IUCN has assessed the Diamantina sabrewing as Near Threatened. It has a very small range and its population size is unknown and believed to be decreasing. Its already restricted habitat is projected to further decrease in area due to climate change.[1] Its habitat "is not presently experiencing major direct human disturbance" and part of it is protected in two national parks.[8]

References

  1. BirdLife International (2021). "Diamantina Sabrewing Campylopterus diamantinensis". IUCN Red List of Threatened Species. 2021: e.T200278757A200746437. Retrieved 7 August 2022.
  2. "Appendices | CITES". cites.org. Retrieved 2022-01-14.
  3. Gill, F.; Donsker, D.; Rasmussen, P., eds. (January 2022). "Hummingbirds". IOC World Bird List. v 12.1. Retrieved January 15, 2022.
  4. HBW and BirdLife International (2021) Handbook of the Birds of the World and BirdLife International digital checklist of the birds of the world. Version 6. Available at: http://datazone.birdlife.org/userfiles/file/Species/Taxonomy/HBW-BirdLife_Checklist_v6_Dec21.zip retrieved August 7, 2022
  5. Lopes, Leonardo; Ferreira de Vasconcelos, Marcelo; Gonzaga, Luiz (2017). "A cryptic new species of hummingbird of the Campylopterus largipennis complex (Aves: Trochilidae)". Zootaxa. 4268 (1): 1–33. doi:10.11646/zootaxa.4268.1.1. PMID 28610380.
  6. 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 24 July 2022. A classification of the bird species of South America. American Ornithological Society. https://www.museum.lsu.edu/~Remsen/SACCBaseline.htm retrieved July 24, 2022
  7. Clements, J. F., T. S. Schulenberg, M. J. Iliff, S. M. Billerman, T. A. Fredericks, J. A. Gerbracht, D. Lepage, B. L. Sullivan, and C. L. Wood. 2021. The eBird/Clements checklist of Birds of the World: v2021. Downloaded from https://www.birds.cornell.edu/clementschecklist/download/ Retrieved August 25, 2021
  8. Greeney, H. F. (2021). Diamantina Sabrewing (Campylopterus diamantinensis), version 1.0. In Birds of the World (H. F. Greeney, Editor). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.gybsab5.01 retrieved August 7, 2022
  9. Ruschi, A. (1963). Um novo representante de Campylopterus (Campylopterus largipennis diamantinensis), da região de Diamantina, no Estado de Minas Gerais. Bol. Mus. Biol. Mello Leitão, Biol. 39: 1-9. In Portuguese with English summary.
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