Gnatcatchers (Polioptilidae)
Masked Gnatcatcher (Polioptila dumicola) - HBW 11, p. 376
French: Gobemoucheron masqué
German: Maskenmückenfänger
Spanish: Perlita Azul
Other common names: Berlepsch’s Gnatcatcher (berlepschi)
Taxonomy: Sylvia dumicola Vieillot, 1817, Paraguay.
Race berlepschi may represent a separate species; has been suggested that intergradation between it and nominate race has increased in S Brazil (S Mato Grosso) as forests which once isolated races have been removed, but other authors comment that no intermediate specimens known; more study needed in presumed contact zone in vicinity of border between Mato Grosso and E Bolivia (Santa Cruz). Some specimens from NE Bolivia (E Beni) asserted to be of race berlepschi, but this location nearly 1000 km W of nearest confirmed records of latter; further study required. Three subspecies r.. View all taxonomy...
Taxonomy: Sylvia dumicola Vieillot, 1817, Paraguay.
Race berlepschi may represent a separate species; has been suggested that intergradation between it and nominate race has increased in S Brazil (S Mato Grosso) as forests which once isolated races have been removed, but other authors comment that no intermediate specimens known; more study needed in presumed contact zone in vicinity of border between Mato Grosso and E Bolivia (Santa Cruz). Some specimens from NE Bolivia (E Beni) asserted to be of race berlepschi, but this location nearly 1000 km W of nearest confirmed records of latter; further study required. Three subspecies recognized.
Race berlepschi may represent a separate species; has been suggested that intergradation between it and nominate race has increased in S Brazil (S Mato Grosso) as forests which once isolated races have been removed, but other authors comment that no intermediate specimens known; more study needed in presumed contact zone in vicinity of border between Mato Grosso and E Bolivia (Santa Cruz). Some specimens from NE Bolivia (E Beni) asserted to be of race berlepschi, but this location nearly 1000 km W of nearest confirmed records of latter; further study required. Three subspecies recognized.
Subspecies and Distribution:
- berlepschi Hellmayr, 1901 - C Brazil (S Maranhão to S Mato Grosso, SC & E Goiás and S Minas Gerais).
- saturata Todd, 1946 - highlands of Bolivia (S Cochabamba, EC Santa Cruz).
- dumicola (Vieillot, 1817) - E Bolivia (Beni, Santa Cruz and SW Cochabamba S through Tarija), Paraguay and S Brazil (C Mato Grosso do Sul) S to E Argentina (E Jujuy and E Salta S to N & E Córdoba and N Buenos Aires) and Uruguay.
- Least Concern Enlarge map
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A female preening Locality Camiri, Santa Cruz Department, Bolivia (ssp dumicola)
Josep del Hoyo 11 August 2005 7 years ago 14 sec 4.5 -
A male singing Locality Camiri, Santa Cruz Department, Bolivia (ssp dumicola)
Josep del Hoyo 11 August 2005 7 years ago 42 sec 4.4 -
A male foraging in a tree. Locality Otamendi Natural Reserve, Buenos Aires Province, Argentina (ssp dumicola)
Josep del Hoyo 24 September 2008 4 years ago 24 sec 4.4 -
A male in the forest. Locality San Carlos Centro, Santa Fe Province, Argentina (ssp dumicola)
Martin Manassero 11 September 2011 1 year ago 24 sec 4.2 -
A male in a tree, foraging and singing. Locality Otamendi Natural Reserve, Buenos Aires Province, Argentina (ssp dumicola)
Josep del Hoyo 24 September 2008 4 years ago 29 sec 4 -
A male singing and moving in a dead tree. Locality Fazenda Praia Alta, Tocantins State, Brazil (ssp berlepschi)
Josep del Hoyo 4 August 2011 1 year ago 22 sec 3.9
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Male perched on a twig.
Locality Buenos Aires, Buenos Aires Province, Argentina (ssp dumicola)
Santiago Meligeni Lozano 23 May 2010 3 years ago 4.6 -
Female shaking a moth in its beak.
Locality Buenos Aires, Buenos Aires Province, Argentina (ssp dumicola)
Santiago Meligeni Lozano 5 November 2010 2 years ago 4.4 -
Male perched inside a spiny tree
Locality Red-fronted Macaw Reserve, Omereque, Cochabamba Department, Bolivia
Dubi Shapiro 10 November 2012 1 week ago ADDED LAST MONTH 4.2 -
Male
Locality Costanera Sur Ecological Reserve, Buenos Aires, Buenos Aires Province, Argentina
Luca Boscain 29 June 2012 11 weeks ago 4 -
Pearched on a branch.
Locality Brotas, São Paulo State, Brazil (ssp dumicola)
Carlos Henrique 4 July 2009 3 years ago 4 -
mist-netted male in hand;western dry chaco, Lomas de Olmedo, 23° 46.036'S; 63° 54.836'W
Locality Salta Province, Argentina (ssp dumicola)
handford 17 August 2004 3 years ago 4
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A male singing. Locality Fazenda Praia Alta, Tocantins State, Brazil
(ssp berlepschi)
Josep del Hoyo 4 August 2011 1 year ago 4 -
Two song phrases from a male Locality Serra dos Caiabis, Alta Floresta, Mato Grosso State, Brazil
(ssp berlepschi)
Bradley Davis 14 July 2006 3 years ago 3 -
Click to play
Male foraging and vocalizing (call notes). Locality Laguna del Diario, Maldonado, Maldonado Department, Uruguay
Antonio Silveira 19 April 2013 4 weeks ago ADDED LAST MONTH 0 -
Male singing near the lagoon. Locality Laguna del Diario, Maldonado, Maldonado Department, Uruguay
(ssp dumicola)
Antonio Silveira 26 December 2012 20 weeks ago 0
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