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Brazilian teal

Brazilian teal
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Order: Anseriformes
Family: Anatidae
Subfamily: Anatinae
Genus: Amazonetta
von Boetticher, 1929
Species:
A. brasiliensis
Binomial name
Amazonetta brasiliensis
(Gmelin, JF, 1789)
Subspecies

See text

Amazonetta brasiliensis - MHNT

The Brazilian teal or Brazilian duck (Amazonetta brasiliensis) is the only duck in the genus Amazonetta. It is widely distributed in eastern South America.

Taxonomy

The Brazilian teal was formally described in 1789 by the German naturalist Johann Friedrich Gmelin in his revised and expanded edition of Carl Linnaeus's Systema Naturae. He placed it with all the other ducks, swans and geese in the genus Anas and coined the binomial name Anas brasiliensis. [2] Gmelin based his description on the Mareca alia species (the second Mareca) that was described in 1648 by the German naturalist Georg Marcgrave in his Historia Naturalis Brasiliae.[3][4] The Brazilian teal is now the only species placed in the genus Amazonetta that was introduced by the German zoologist Hans von Boetticher in 1929.[5][6]

It was formerly considered a perching duck, but more recent analyses indicate that it belongs to a clade of South American dabbling ducks which also includes the crested duck, the bronze-winged duck, and possibly the steamer ducks.[7]

Two subspecies are recognised:[6]

  • A. b. brasiliensis (Gmelin, 1789) – the nominate race, found in Brazil, Suriname, Guyana, French Guiana, central Venezuela, eastern Colombia, and northeastern Peru
  • A. b. ipecutiri (Vieillot, 1816) – found in Brazil, northern Argentina, eastern Bolivia, Uruguay, and Paraguay

Description

The ducks are light brown in colour. Drakes distinguish themselves from females in having red beaks and legs, and in having a distinctive pale grey area on the side of its head and neck. The colour of these limbs is much duller in females.

Distribution and habitat

They can be found throughout eastern South America, from central Brazil, to Uruguay, to northern and eastern Argentina, Paraguay, central Venezuela, northeastern Peru, Suriname, Guyana, French Guiana, eastern Bolivia, and eastern Colombia.[1][8] Their preferred habitat is a body of freshwater away from the coast with dense vegetation nearby.

Behaviour

Brazilian teal live in pairs or in small groups of up to twenty birds. Both parents look after their hatchlings. They eat seeds, fruits, roots and insect, while ducklings eat only insects.

Status

They are plentiful and are listed as of Least Concern.[1]

References

  1. ^ a b c BirdLife International (2018). "Amazonetta brasiliensis". IUCN Red List of Threatened Species. 2018: e.T22680115A130025891. doi:10.2305/IUCN.UK.2018-2.RLTS.T22680115A130025891.en. Retrieved 12 November 2021.
  2. ^ Gmelin, Johann Friedrich (1788). Systema naturae per regna tria naturae : secundum classes, ordines, genera, species, cum characteribus, differentiis, synonymis, locis (in Latin). Vol. 1, Part 2 (13th ed.). Lipsiae [Leipzig]: Georg. Emanuel. Beer. p. 517.
  3. ^ Marcgrave, Georg (1648). Historia Naturalis Brasiliae: Liber Quintus: Qui agit de Avibus (in Latin). Lugdun and Batavorum (London and Leiden): Franciscum Hackium and Elzevirium. p. 214.
  4. ^ Mayr, Ernst; Cottrell, G. William, eds. (1979). Check-List of Birds of the World. Vol. 1 (2nd ed.). Cambridge, Massachusetts: Museum of Comparative Zoology. p. 458.
  5. ^ von Boetticher, Hans (1929). "Kritische Betrachtungen über Anatiden" (PDF). Anzeiger der Ornithologischen Gesellschaft in Bayern (in German). 2 (1): 10-15 [12].
  6. ^ a b Gill, Frank; Donsker, David; Rasmussen, Pamela, eds. (January 2022). "Screamers, ducks, geese & swans". IOC World Bird List Version 12.1. International Ornithologists' Union. Retrieved 3 July 2022.
  7. ^ Johnson, Kevin P. & Sorenson, Michael D. (1999). "Phylogeny and biogeography of dabbling ducks (genus Anas): a comparison of molecular and morphological evidence" (PDF). Auk. 116 (3): 792–805. doi:10.2307/4089339. JSTOR 4089339.
  8. ^ Clements, James, (2007) The Clements Checklist of the Birds of the World, Cornell University Press, Ithaca.
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Brazilian teal
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