Quebradas de Treinta y Tres

IBA Criteria

Year of most recent IBA criteria assessment: 2008

Populations of IBA trigger species
Species Current IUCN Red List Category Season Year(s) of estimate Population estimate IBA Criteria Triggered
Straight-billed Reedhaunter Limnoctites rectirostris NT resident 1992-2006 90 individuals A1, A2
Black-and-white Monjita Xolmis dominicanus VU resident 1992-2006 90 individuals A1
Saffron-cowled Blackbird Xanthopsar flavus EN resident 1986 90 individuals A1

Note: This table presents the IBA criteria triggered and the species that triggered then at the time of assessment, the current IUCN Red List category may vary from that which was in place at that time.

For more information about the IBA assessment process and criteria please click here

IBA Monitoring

Most recent IBA monitoring assessment
Year of assessment Threat score (pressure) Condition score (state) Action score (response)
2013 very high favourable negligible
Was the whole site covered? Yes State assessed by Habitat
Accuracy of information unknown

Threats to the site (pressure)
Threat Level 1 Threat Level 2 Timing Scope Severity Result
Agricultural expansion and intensification wood and pulp plantations (includes afforestation) - agro-industry plantations happening now whole area/population (>90%) moderate to rapid deterioration very high
Energy production and mining mining and quarrying happening now whole area/population (>90%) moderate to rapid deterioration very high

Condition of habitat (state)
Habitat Habitat Detail Reference Area (ha) Actual Area (ha) % of habitat remaining % of carrying capacity (overall) Result
Grassland 0 0 good (> 90%) good (> 90%) favourable

Conservation actions taken at site (response)
Conservation Designation Management Planning Conservation Action Result
Little/none of site covered (<10%) No management plan exists but the management planning process has begun Unknown negligible
For more information about IBA monitoring please click here

IBA Protection

Protected Area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)
Quebrada de los Cuervos Municipal Reserve 400 protected area contained by site 400
Quebrada de los Cuervos Paisaje Protegido 4,413 protected area contained by site 0
Quebrada de los Cuervos Protected Natural Area 366 protected area contained by site 366


IUCN Habitat Habitat detail Extent (% of site)
Forest -
Grassland Campo grassland -
For further information about the habitat classification please click here.

Land use

Land-use Extent (% of site)
rangeland/pastureland -
tourism/recreation -
For further information about the land use classification please click here.

Recommended citation
BirdLife International (2022) Important Bird Areas factsheet: Quebradas de Treinta y Tres. Downloaded from on 28/11/2022.