Quebradas de Treinta y Tres

IBA Justification

The site was identified as important in 2008 because it was regularly supporting significant populations of the species listed below, meeting ('triggering') IBA criteria.

Populations meeting IBA criteria ('trigger species'):
Species Current IUCN Red List Category Season Year(s) Population estimate at site IBA criteria met
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

The current IUCN Red List category may differ from that which was valid at the time of IBA criteria assessment (2008).

IBA Conservation

IBA conservation assessment
Year of assessment (most recent) State (condition) Pressure (threat) Response (action)
2013 favourable very high negligible
Was the whole site assessed? State assessed by Accuracy of information
yes habitat unknown

State (condition of the trigger species' habitats)
Habitat Habitat detail Reference area (ha) Actual area (ha) Habitat quantity (% remaining) Habitat quality (carrying capacity) Result
Grassland 0 0 good (> 90%) good (> 90%) favourable

Pressure (threats to the trigger species and/or their habitats)
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

Response (conservation actions taken for the trigger species and/or their habitats)
Protected-area designation Management planning Other 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 conservation status, please click here

IBA Protection

Protected area (PA) PA designation PA area (ha) Relationship of PA with IBA Overlap of PA 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


Habitat (IUCN level 1) Habitat detail Extent (% of site)
Forest -
Grassland Campo grassland -
For more information about the IUCN Habitat classification, please click here.

Land use

Land-use Extent (% of site)
rangeland/pastureland -
tourism/recreation -

Recommended citation
BirdLife International (2023) Important Bird Area factsheet: Quebradas de Treinta y Tres. Downloaded from on 30/11/2023.