Typical Antbirds (Thamnophilidae)
Variable Antshrike (Thamnophilus caerulescens) - HBW 8, p. 561
French: Batara bleuâtre
German: Südlicher Tropfenameisenwürger
Spanish: Batará Variable
Taxonomy: Thamnophilus cærulescens Vieillot, 1816, Paraguay.
Relationships uncertain; has been treated as forming a superspecies with T. amazonicus, but such a relationship considered unlikely. Complex plumage variation and unusual geographical distribution suggest that this species is a prime candidate for systematic study. Other described races seem indistinguishable or have plumage differences that appear to be clinal; thus, subandinus (N Peru) synonymized with melanochrous, connectens (EC Bolivia) with dinellii, albonotatus (EC Brazil) with nominate, and pernambucensis (NE Brazil) with cearensis.. View all taxonomy...
Taxonomy: Thamnophilus cærulescens Vieillot, 1816, Paraguay.
Relationships uncertain; has been treated as forming a superspecies with T. amazonicus, but such a relationship considered unlikely. Complex plumage variation and unusual geographical distribution suggest that this species is a prime candidate for systematic study. Other described races seem indistinguishable or have plumage differences that appear to be clinal; thus, subandinus (N Peru) synonymized with melanochrous, connectens (EC Bolivia) with dinellii, albonotatus (EC Brazil) with nominate, and pernambucensis (NE Brazil) with cearensis. Documentation needed in order to establish whether any parapatry without intergradation exists among races listed below. Eight subspecies recognized.
Relationships uncertain; has been treated as forming a superspecies with T. amazonicus, but such a relationship considered unlikely. Complex plumage variation and unusual geographical distribution suggest that this species is a prime candidate for systematic study. Other described races seem indistinguishable or have plumage differences that appear to be clinal; thus, subandinus (N Peru) synonymized with melanochrous, connectens (EC Bolivia) with dinellii, albonotatus (EC Brazil) with nominate, and pernambucensis (NE Brazil) with cearensis. Documentation needed in order to establish whether any parapatry without intergradation exists among races listed below. Eight subspecies recognized.
Subspecies and Distribution:
- melanochrous P. L. Sclater & Salvin, 1876 - E slope of Andes in Peru (from Amazonas S of R Marañón S to N Puno).
- aspersiventer d’Orbigny & Lafresnaye, 1837 - SE Peru (SE Puno) and WC Bolivia (N slope in La Paz, Cochabamba and Santa Cruz).
- dinellii Berlepsch, 1906 - EC & S Bolivia on S & E Andean slopes (Santa Cruz S to Tarija), and NW Argentina (E slope from Jujuy S to La Rioja and, at lower elevations, E to Formosa and S to N Córdoba and Santa Fe).
- melanochrous P. L. Sclater & Salvin, 1876 - E slope of Andes in Peru (from Amazonas S of R Marañón S to N Puno).
- aspersiventer d’Orbigny & Lafresnaye, 1837 - SE Peru (SE Puno) and WC Bolivia (N slope in La Paz, Cochabamba and Santa Cruz).
- dinellii Berlepsch, 1906 - EC & S Bolivia on S & E Andean slopes (Santa Cruz S to Tarija), and NW Argentina (E slope from Jujuy S to La Rioja and, at lower elevations, E to Formosa and S to N Córdoba and Santa Fe).
- paraguayensis Hellmayr, 1904 - SE Bolivia (lowlands of Santa Cruz), NW & NC Paraguay (W of R Paraguay and, to E, in Concepción, Amambay and San Pedro) and S Brazil (Mato Grosso do Sul).
- gilvigaster Pelzeln, 1868 - NE Argentina (E of R Paraná except Misiones), extreme SE Brazil (E Paraná and SE São Paulo S to Rio Grande do Sul) and Uruguay.
- caerulescens Vieillot, 1816 - SE Paraguay (E of R Paraguay except Concepción, Amambay and San Pedro), extreme N Argentina (Misiones), and N part of SE Brazil (Minas Gerais and SE Bahia S to W Paraná, W & NE São Paulo and Rio de Janeiro).
- ochraceiventer Snethlage, 1928 - EC Brazil (S Tocantins, Goiás, Distríto Federal, SC Bahia).
- cearensis (Cory, 1919) - NE Brazil (Ceará, Pernambuco, Alagoas).
- Least Concern Enlarge map
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A male searching in dead vegetation Locality Machu Picchu, Cusco Department, Peru (ssp melanochrous)
Josep del Hoyo 26 July 2005 7 years ago 23 sec 4.7 -
Recorded of a couple on the nest. Male and female feeding and sit on the nest.This video is part of the video with more records Locality Itapecerica da Serra, São Paulo State, Brazil
Antonio Silveira 22 November 1992 31 weeks ago 1 min 10 sec 4.5 -
A male in the rain, calling softly and moving on branches. Locality Serra de Baturité, Ceará State, Brazil (ssp cearensis)
Josep del Hoyo 2 October 2008 3 years ago 31 sec 4.4 -
brief slow motioned view Locality Tres Picos State Park, Rio de Janeiro State, Brazil (ssp caerulescens)
Juan Sanabria 1 November 2011 1 year ago 17 sec 4.3 -
male bird Locality Abra Patricia, San Martín Department, Peru (ssp melanochrous)
Daniêl Jimenez 27 November 2012 4 days ago ADDED LAST WEEK 38 sec 4 -
A bird perched on a branch. Locality Abra Patricia, San Martín Department, Peru
Yoel Jimenez 28 November 2012 18 weeks ago 22 sec 4
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Choca da mata
Locality Peruíbe, São Paulo State, Brazil
Lindolfo Souto 2 March 2013 10 weeks ago 4.5 -
A female put in a branch
Locality El Palmar National Park, Entre Ríos Province, Argentina (ssp gilvigaster)
Horacio Luna 17 June 2010 2 years ago 4.4 -
Individuo forrajeando
Locality Tacuarembó Department, Uruguay
Santiago Carvalho 18 weeks ago 3.7 -
Escobar, Buenos Aires, Argentina
Locality Buenos Aires, Buenos Aires Province, Argentina
Silvia Vitale 10 September 2010 1 year ago 3.7 -
Female perched on natural forest.
Locality Las Cumbres de Punta Ballena, Maldonado Department, Uruguay
Antonio Silveira 18 April 2013 4 weeks ago ADDED LAST MONTH 3.6 -
Two babys in the nest
Locality Concepción Department, Paraguay
Ivana Urízar 10 August 2012 11 weeks ago 3.6
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Song Locality Puerto Piracuacito, Santa Fe Province, Argentina
Martin Manassero 27 December 2012 19 weeks ago 4 -
Loudsong Locality Formosa Province, Argentina
Nacho Areta 3 years ago 3 -
A female. Locality Nova Veneza, Santa Catarina State, Brazil
João Just 2 September 2012 32 weeks ago 0
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