• Summary
• Text account
• Data table and detailed info
• Map
• Reference and further resources

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
Egyptian Vulture Neophron percnopterus	EN	breeding (2008)	16–17 pairs	A1, B2, C1, C2
Bonelli's Eagle Aquila fasciata	LC	resident (2008)	1–3 pairs	C2, C6
Red-billed Chough Pyrrhocorax pyrrhocorax	LC	resident (2011)	300–350 pairs	B2, C2, 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 (2007) is shown below.

Pressure (threats to the trigger species and/or their habitats)
Threat	Timing	Scope	Severity	Result
Transportation and service corridors	likely in short term (<4 years)	some of popul­ation/area (10–49%)	rapid decline (>30% over 3 gener­ations)	high
Pollution	likely in short term (<4 years)	some of popul­ation/area (10–49%)	rapid decline (>30% over 3 gener­ations)	high
Energy production and mining	happe­ning now	some of popul­ation/area (10–49%)	slow decline (1–10% over 3 gener­ations)	medium

Response (conservation actions taken for the trigger species and/or their habitats)
Designation	Planning	Action	Result
Most of area (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 (management category)	% coverage of IBA
2006	Montes Obarenes-San Zadornil	Parque Natural (V)	29

Habitat	% of IBA	Habitat detail
Rocky areas (eg. inland cliffs, mountain peaks)	65	Inland cliffs
Artificial/Terrestrial	35	Arable land; Perennial crops, orchards and groves; Forestry plantations
Forest	20	Broadleaved deciduous woodland; Mixed woodland; Alluvial and very wet forest
Shrubland	20	Scrub; Heathland
Wetlands (inland)	5	Rivers and streams

Land use	% of IBA
hunting	60
forestry	55
agriculture	35
not utilised	5

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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 23/12/2024.