Data Zone
The site was identified as important in 2011 because it was regularly supporting significant populations of the species listed below, meeting ('triggering') IBA criteria.
Populations meeting IBA criteria ('trigger species') at the site:| Species | Red List1 | Season | Year(s) | Size | IBA criteria |
|---|---|---|---|---|---|
| Egyptian Vulture Neophron percnopterus | EN | breeding | 2008 | 16-17 breeding pairs | A1, B2, C1, C2 |
| Bonelli's Eagle Aquila fasciata | LC | resident | 2008 | 1-3 breeding pairs | C2, C6 |
| Red-billed Chough Pyrrhocorax pyrrhocorax | LC | resident | 2011 | 300-350 breeding pairs | B2, C2, C6 |
1. The current IUCN Red List category. The category at the time of the IBA criteria assessment (2011) may differ.
Ideally the conservation status of the IBA will have been checked regularly since the site was first identified in 2011. The most recent assessment (2007) is shown below.
| IBA conservation assessment | |||
|---|---|---|---|
| Year of assessment | State | Pressure | Response |
| 2007 | not assessed | high | low |
| Whole site assessed? | State assessed by | Accuracy of information | |
| yes | unset | poor | |
| Pressure (threats to the trigger species and/or their habitats) | ||||
|---|---|---|---|---|
| Threat | Timing | Scope | Severity | Result |
| Transportation and service corridors | likely in short term (within 4 years) | some of area/population (10-49%) | very rapid to severe deterioration | high |
| Pollution | likely in short term (within 4 years) | some of area/population (10-49%) | very rapid to severe deterioration | high |
| Energy production and mining | happening now | some of area/population (10-49%) | slow but significant deterioration | medium |
| Response (conservation actions taken for the trigger species and/or their habitats) | |||
|---|---|---|---|
| Protected areas | Management plan | Other action | Result |
| Most of site (50-90%) covered (including the most critical parts for important bird species) | No management plan exists but the management planning process has begun | Not assessed | low |
| Year | Protected Area | Designation | % overlap with IBA |
|---|---|---|---|
| 1998 | Montes Obarenes | Site of Community Importance (Habitats Directive) | 36 |
| 2000 | Sierra de la Tesla-Valdivielso - ZEPA | Special Protection Area (Birds Directive) | 52 |
| 2000 | Sierra De La Tesla-Valdivielso | Site of Community Importance (Habitats Directive) | 47 |
| 2000 | Montes Obarenes | Special Protection Area (Birds Directive) | 34 |
| 2000 | Riberas Del Río Oca y Afluentes | Site of Community Importance (Habitats Directive) | <1 |
| 2006 | Montes Obarenes-San Zadornil | Parque Natural | 29 |
| Habitat1 | Habitat detail | % of IBA |
|---|---|---|
| Rocky areas (eg. inland cliffs, mountain peaks) | Inland cliffs | 65 |
| Artificial/Terrestrial | Arable land, Perennial crops, orchards and groves, Forestry plantations | 35 |
| Forest | Broadleaved deciduous woodland, Mixed woodland, Alluvial and very wet forest | 20 |
| Shrubland | Scrub, Heathland | 20 |
| Wetlands (inland) | Rivers and streams | 5 |
| Land use | % of IBA |
|---|---|
| hunting | 60 |
| forestry | 55 |
| agriculture | 35 |
| not utilised | 5 |
Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Oña and Tesla mountain ranges (Spain). Downloaded from
https://datazone.birdlife.org/site/factsheet/oña-and-tesla-mountain-ranges-iba-spain on 23/11/2024.