Bay-headed tanager

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Bay-headed tanager
Tangara gyrola -Manizales, Caldas, Colombia-8 (2).jpg
In Colombia
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Order: Passeriformes
Family: Thraupidae
Genus: Tangara
Species:
T. gyrola
Binomial name
Tangara gyrola
Tangara gyrola map.svg
Synonyms
  • Fringilla gyrolaLinnaeus, 1758
  • Tanagra gyrolaLinnaeus, 1766

The bay-headed tanager (Tangara gyrola) is a medium-sized passerine bird. This tanager is a resident breeder in Costa Rica, Panama, South America south to Ecuador, Bolivia and north-western Brazil, and on Trinidad.

Contents

Taxonomy

The bay-headed tanager was formally described by the Swedish naturalist Carl Linnaeus in 1758 in the tenth edition of his Systema Naturae under the binomial name Fringilla gyrola. [2] The specific epithet is a diminutive of the Latin gyrus meaning "ring". [3] Linnaeus based his own description on the "red-headed green-finch" that had been described and illustrated by the English naturalist George Edwards in 1743 in his A Natural History of Uncommon Birds. [4] The type locality is Suriname. [5] The bay-headed tanager is now placed in the genus Tangara that was introduced by the French zoologist Mathurin Jacques Brisson in 1760. [6] [7]

Nine subspecies are recognised: [7]

Description

Adult bay-headed tanagers are 14 cm long and weigh 19.5 g. The nominate race T. g. gyrola is mainly green apart from a chestnut head, a blue or green belly, and a thin gold collar on the hind neck. Sexes are similar, but immatures are duller with chestnut-flecked green heads. There is considerable plumage variation between the various subspecies, and T. g.viridissima of northeast Venezuela and Trinidad has green underparts concolorous with the rest of the body plumage.

The bay-headed tanager's song is a slow seee, seee, seee, tsou, tsooy.

Distribution and habitat

It occurs in forests, particularly in wetter areas. The bulky cup nest is built in a tree and the normal clutch is two brown-blotched white eggs. The female incubates the eggs for 13–14 days to hatching, with another 15–16 days before the chicks fledge.

Behavior and ecology

These are social birds which eat mainly fruit, usually swallowed whole. Insects are also taken, mainly from the underside of branches.

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References

  1. BirdLife International (2018). "Tangara gyrola". IUCN Red List of Threatened Species . 2018: e.T22722878A132158366. doi: 10.2305/IUCN.UK.2018-2.RLTS.T22722878A132158366.en . Retrieved 11 November 2021.
  2. Linnaeus, Carl (1758). Systema Naturae per regna tria naturae, secundum classes, ordines, genera, species, cum characteribus, differentiis, synonymis, locis (in Latin). Vol. 1 (10th ed.). Holmiae (Stockholm): Laurentii Salvii. p. 181.
  3. Jobling, James A. (2010). The Helm Dictionary of Scientific Bird Names. London: Christopher Helm. p. 183. ISBN   978-1-4081-2501-4.
  4. Edwards, George (1743). A Natural History of Uncommon Birds. Vol. Part 1. London: Printed for the author at the College of Physicians. p. 23, Plate 23.
  5. Paynter, Raymond A. Jr, ed. (1970). Check-List of Birds of the World. Vol. 13. Cambridge, Massachusetts: Museum of Comparative Zoology. p. 374.
  6. Brisson, Mathurin Jacques (1760). Ornithologie, ou, Méthode Contenant la Division des Oiseaux en Ordres, Sections, Genres, Especes & leurs Variétés (in French and Latin). Paris: Jean-Baptiste Bauche. Vol. 1 p. 36 and Vol. 3 p. 3.
  7. 1 2 Gill, Frank; Donsker, David; Rasmussen, Pamela, eds. (July 2020). "Tanagers and allies". IOC World Bird List Version 10.2. International Ornithologists' Union. Retrieved 14 October 2020.

Further reading