Data Zone
The site was identified as internationally important for bird conservation 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 List | Season (year/s of estimate) | Size | IBA criteria |
|---|---|---|---|---|
| Golden Eagle Aquila chrysaetos | LC | resident (2008) | min 22 pairs | B2, C2, C6 |
| Bonelli's Eagle Aquila fasciata | LC | resident (2010) | 3 pairs | C2, C6 |
| Peregrine Falcon Falco peregrinus | LC | resident (2010) | min 18 pairs | C6 |
Ideally the conservation status of the IBA will have been checked regularly since the site was first identified in 2011. The most recent assessment (2008) is shown below.
| IBA conservation assessment | |||
|---|---|---|---|
| Year of assessment | State | Pressure | Response |
| 2008 | poor | very high | very low |
| Whole site assessed? | State assessed by | Accuracy of information | |
| yes | habitat | medium | |
| State (condition of the trigger species' habitats) | |||
|---|---|---|---|
| Habitat | Quantity (% remaining) | Quality (% carrying capacity) | Result |
| Forest | moderate (70–90%) | moderate (70–90%) | poor |
| Shrubland | good (>90%) | good (>90%) | good |
| Pressure (threats to the trigger species and/or their habitats) | ||||
|---|---|---|---|---|
| Threat | Timing | Scope | Severity | Result |
| Biological resource use | happening now | whole of population/area (>90%) | moderate decline (10–30% over 3 generations) | very high |
| Natural system modifications | likely in short term (<4 years) | some of population/area (10–49%) | moderate decline (10–30% over 3 generations) | medium |
| Transportation and service corridors | likely in long term (>4 years) | some of population/area (10–49%) | moderate decline (10–30% over 3 generations) | medium |
| Energy production and mining | happening now | few individuals/small area (<10%) | rapid decline (>30% over 3 generations) | low |
| Response (conservation actions taken for the trigger species and/or their habitats) | |||
|---|---|---|---|
| Designation | Planning | Action | Result |
| Little/none of area covered (<10%) | No management planning has taken place | Very little or no conservation action taking place | very low |
| Year | Protected Area | Designation (management category) | % coverage of IBA |
|---|---|---|---|
| 1973 | Sonsaz | National Game Reserve (IV) | 37 |
| 1974 | Hayedo de Montejo de la Sierra | Sitio Natural de Interés Nacional (Ia) | <1 |
| 1974 | Riofrío de Riaza | Nature Area of National Interest (IV) | <1 |
| 1974 | Hayedo de Montejo de la Sierra | Nature Area of National Interest (-) | <1 |
| 1978 | Hayedo de Tejera Negra | Nature Park (V) | 1 |
| 2005 | Sierra del Rincón | UNESCO-MAB Biosphere Reserve (UA) | - |
| Habitat | % of IBA | Habitat detail |
|---|---|---|
| Artificial/Terrestrial | 50 | Arable land; Forestry plantations |
| Shrubland | 15 | Scrub |
| Forest | 10 | Broadleaved deciduous woodland |
| Grassland | 10 | Dry siliceous grassland; Humid grasslands |
| Rocky areas (eg. inland cliffs, mountain peaks) | 10 | Inland cliffs |
| Land use | % of IBA |
|---|---|
| hunting | 100 |
| forestry | 60 |
| agriculture | - |
Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Ayllón mountain range (Spain). Downloaded from
https://datazone.birdlife.org/site/factsheet/ayllón-mountain-range-iba-spain on 27/12/2024.