Crimson-backed tanager

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Crimson-backed tanager
Crimson-backed Tanager - Panama H8O8413 (22954596730).jpg
Male R. d. isthmicus, Panama
Crimson-backed tanager (Ramphocelus dimidiatus molochinus) female Cundinamarca.jpg
female R. d. molochinus, Colombia
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Order: Passeriformes
Family: Thraupidae
Genus: Ramphocelus
Species:
R. dimidiatus
Binomial name
Ramphocelus dimidiatus
Lafresnaye, 1837
Ramphocelus dimidiatus map.svg

The crimson-backed tanager (Ramphocelus dimidiatus) is a species of bird in the family Thraupidae. It is found in Colombia, Panama, and Venezuela, and introduced to French Polynesia. [2] Its natural habitats are subtropical or tropical moist lowland forests and heavily degraded former forest. [2] A nickname in Panama is sangre de toro ("Blood of the bull"). [3]

Contents

The crimson-backed tanager was first described by French naturalist Frédéric de Lafresnaye in 1837. It is one of nine species of brightly coloured tanagers of the genus Ramphocelus . Mitochondrial DNA evidence indicates its closest relative is the masked crimson tanager (R. nigrogularis), and the two split around 800,000 years ago. [4]

female R. d. isthmicus, Panama City Crimson-backed Tanager.tif
female R. d. isthmicus, Panama City

Measuring around 18 cm (7.1 in) in length, the adult male has a silver sheen on its lower mandible. [5] Its whole head and chest are a maroon red, brightening to a bright red on its lower back and abdomen. Its wings and tail are black. The female is duller with blackish underparts. [6]

It is found in northern and western Colombia (south to Chocó where it is uncommon [6] ), the Maracaibo Basin in Venezuela, [5] and over most of Panama, where it extends to Chiriquí and Veraguas Provinces in the west of the country, as well as Coiba, where it is abundant, and Pearl Islands. [3] It inhabits forest, scrub and gardens. [5]

A nest with a clutch of two blue eggs with fine dark dots has been recorded. [6]

A field study on blood parasites found that two individual crimson-backed tanagers (out of twelve tested) bore Plasmodium , with the study concluding the overall rate was low compared with studies done elsewhere. [7]

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References

  1. BirdLife International (2018). "Ramphocelus dimidiatus". IUCN Red List of Threatened Species . 2018: e.T22722500A132154364. doi: 10.2305/IUCN.UK.2018-2.RLTS.T22722500A132154364.en . Retrieved 12 November 2021.
  2. 1 2 "BirdLife Species Factsheet (additional data): Crimson-backed Tanager". BirdLife International. Retrieved 25 July 2009.
  3. 1 2 Ridgely, Robert S.; Gwynne, John A. (1992). A Guide to the Birds of Panama: With Costa Rica, Nicaragua, and Honduras. Princeton University Press. p. 403. ISBN   0-691-02512-6.
  4. Burns, Kevin J.; Racicot, Rachel A. (2009). "Molecular phylogenetics of a clade of lowland tanagers: implications for avian participation in the great American interchange" (PDF). The Auk. 126 (3): 635–648. doi:10.1525/auk.2009.08195. S2CID   32907534. Archived from the original (PDF) on 2011-09-29. Retrieved 2011-05-31.
  5. 1 2 3 Ridgely, Robert S.; Tudor, Guy (2009). Field Guide to the Songbirds of South America: The Passerines. University of Texas Press. p. 614. ISBN   978-0-292-71979-8.
  6. 1 2 3 Hilty, Steven L.; Brown, Bill (1986). A guide to the birds of Colombia. Princeton University Press. p. 624. ISBN   0-691-08372-X . Retrieved 1 June 2011.
  7. Londoño, Aurora; Pulgarin-R., Paulo C.; Blair, Silvia (2007). "Blood Parasites in Birds From the Lowlands of Northern Colombia" (PDF). Caribbean Journal of Science. 43 (1): 87–93. doi:10.18475/cjos.v43i1.a8. S2CID   87907947.

Further reading