Species

Justification
This species is classified as Near Threatened as it has a moderately small population which is probably declining owing to habitat loss and degradation in parts of its range, and within which all subpopulations are small. Further population estimates could result in its uplisting to Vulnerable.

Taxonomic source(s)
SACC. 2006. A classification of the bird species of South America. Available at: http://www.museum.lsu.edu/~Remsen/SACCBaseline.html.
Sibley, C. G.; Monroe, B. L. 1990. Distribution and taxonomy of birds of the world. Yale University Press, New Haven, USA.
Stotz, D. F.; Fitzpatrick, J. W.; Parker, T. A.; Moskovits, D. K. 1996. Neotropical birds: ecology and conservation. University of Chicago Press, Chicago.

Taxonomic note
Gender agreement of species name follows David and Gosselin (2002b).

Synonym(s)
Pseudocolopteryx dinellianus Collar et al. (1994), Pseudocolopteryx dinellianus BirdLife International (2004), Pseudocolopteryx dinellianus BirdLife International (2000), Pseudocolopteryx dinellianus Sibley and Monroe (1990, 1993), Pseudocolopteryx dinellianus Stotz et al. (1996), Pseudocolopteryx dinellianus

Identification
11.5 cm. Small, pale yellow and brown flycatcher. Upperparts pale olivaceous brown, with plainer brown crown. Underparts yellow, brighter on throat. Faint buffy wing-bars. Similar spp. Most similar to Warbling Doradito P. flaviventris which is browner above with a more rufescent crown; often shows a squared-off head shape, well rounded in Dinelli's. Voice A series of soft, high pitched chattered and fast rolling notes chrrret-chrrret chrrrut ended up in a very thin íík. Hints Generally conspicuous and tame in their shrubby habitat, but not always easy to locate.

Distribution and population
Pseudocolopteryx dinellianus occurs within a discrete range in north Argentina (Tucumán, Santiago del Estero, Santa Fe, Córdoba, and possibly Salta), with presumed wintering records from north Formosa, Argentina (J. C. Chebez in litt. 1995, 1999), adjacent Bolivia (two specimens collected in Tarija, 1926) and Paraguay (seven records, four from the Chaco and three from the Oriente) (Lowen et al. 1996). It is more or less common in Córdoba, where the major global stronghold is protected by the Bañados del Río Dulce and Laguna de Mar Chiquita Natural Park, and frequent in Santiago del Estero, but there are no recent records for Tucumán. In some areas it may be declining due to agricultural conversion; however, extensive areas of suitable habitat remain in its breeding and wintering ranges, and the population seems relatively stable.

Population justification
The population is preliminarily estimated to number at least 10,000 individuals, roughly equating to 6,700 mature individuals. This requires confirmation.

Trend justification
The population is suspected to be in decline owing to ongoing deforestation and habitat destruction.

Ecology
It inhabits periodically flooded rushy and grassy marsh vegetation and shrubbery near watercourses in lowland scrub, with nests found in bushes, rushes and tall grass.

Threats
Canalisation may affect the wetlands of Bañados del Río Dulce and Laguna de Mar Chiquita (J. C. Chebez in litt. 1995, 1999), and there are other modifications to wetlands occurring within its range (Hayes et al. 1994). Where it inhabits drier savanna-type vegetation, it is probably under some pressure from agricultural conversion.

Conservation actions underway
The stronghold is Bañados del Río Dulce and Laguna de Mar Chiquita Natural Park (Argentina). In the non-breeding season it occurs in San Antonio Private Nature Reserve and Tacuara National Park, Paraguay.

Conservation actions proposed
Study its ecological requirements. Survey known populations and search potential non-breeding habitat. Effectively protect wetlands within its range.

References
Collar, N. J.; Gonzaga, L. P.; Krabbe, N.; Madroño Nieto, A.; Naranjo, L. G.; Parker, T. A.; Wege, D. C. 1992. Threatened birds of the Americas: the ICBP/IUCN Red Data Book. International Council for Bird Preservation, Cambridge, U.K.

Hayes, F. E.; Scharf, P. A.; Ridgely, R. S. 1994. Austral bird migrants in Paraguay. Condor 96: 83-97.

Lowen, J. C.; Bartrina, L.; Clay, R. P.; Tobias, J. A. 1996. Biological surveys and conservation priorities in eastern Paraguay (the final reports of Projects Canopy '92 and Yacutinga '95). CSB Conservation, Cambridge, U.K.

Further web sources of information
Detailed species account from the Threatened birds of the Americas: the BirdLife International Red Data Book (BirdLife International 1992). Please note, taxonomic treatment and IUCN Red List category may have changed since publication.

Hear sounds for this species from xeno-canto, the community database of shared bird sounds from around the world.

Recuento detallado de la especie tomado del libro Aves Amenazadas de las Americas, Libro Rojo de BirdLife International (BirdLife International 1992). Nota: la taxonomoa y la categora de la Lista Roja de la UICN pudo haber cambiado desde esta publicacin.

View photos and videos, and hear sounds of this species from the Internet Bird Collection

Text account compilers
Capper, D., Mazar Barnett, J., O'Brien, A., Sharpe, C J, Symes, A.

Contributors
Chebez, J.

IUCN Red List evaluators
Butchart, S., Symes, A.

Recommended citation
BirdLife International (2013) Species factsheet: Pseudocolopteryx dinelliana. Downloaded from http://www.birdlife.org on 21/05/2013. Recommended citation for factsheets for more than one species: BirdLife International (2013) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 21/05/2013.

This information is based upon, and updates, the information published in BirdLife International (2000) Threatened birds of the world. Barcelona and Cambridge, UK: Lynx Edicions and BirdLife International, BirdLife International (2004) Threatened birds of the world 2004 CD-ROM and BirdLife International (2008) Threatened birds of the world 2008 CD-ROM. These sources provide the information for species accounts for the birds on the IUCN Red List.

To provide new information to update this factsheet or to correct any errors, please email BirdLife

To contribute to discussions on the evaluation of the IUCN Red List status of Globally Threatened Birds, please visit BirdLife's Globally Threatened Bird Forums.