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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
Grey Partridge Perdix perdix	LC	resident (2004)	min 346 pairs	C6
Western Capercaillie Tetrao urogallus	LC	resident (2009)	3–4 males	C6
European Honey-buzzard Pernis apivorus	LC	breeding (2004)	max 15 pairs	C6
Egyptian Vulture Neophron percnopterus	EN	breeding (2008)	min 23 pairs	A1, B2, C1, C2
Black Woodpecker Dryocopus martius	LC	resident (2010)	min 15 pairs	C6
Middle Spotted Woodpecker Leiopicus medius	LC	resident (2004)	181–255 pairs	C6
Red-billed Chough Pyrrhocorax pyrrhocorax	LC	non-breeding (2011)	min 700 birds	C2
Red-billed Chough Pyrrhocorax pyrrhocorax	LC	resident (2011)	min 250 pairs	B2, C2
Rufous-tailed Rock-thrush Monticola saxatilis	LC	breeding (2011)	min 80 pairs	B2

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.

State (condition of the trigger species' populations)
Species	Actual vs Reference (units)	% remaining	Result
Western Capercaillie Tetrao urogallus	9 / 153 (males)	6	very poor

Pressure (threats to the trigger species and/or their habitats)
Threat	Timing	Scope	Severity	Result
Biological resource use	happe­ning now	most of popul­ation/area (50–90%)	moderate decline (10–30% over 3 gener­ations)	high
Transportation and service corridors	likely in short term (<4 years)	some of popul­ation/area (10–49%)	rapid decline (>30% over 3 gener­ations)	high
Pollution	happe­ning now	some of popul­ation/area (10–49%)	slow decline (1–10% over 3 gener­ations)	medium
Human intrusions and disturbance	happe­ning now	some of popul­ation/area (10–49%)	slow decline (1–10% over 3 gener­ations)	medium
Residential and commercial development	likely in short term (<4 years)	some of popul­ation/area (10–49%)	moderate decline (10–30% over 3 gener­ations)	medium
Agricultural expansion and intensification	happe­ning now	few indivi­duals/small area (<10%)	no or slight decline (<1% over 3 gener­ations)	low
Energy production and mining	likely in short term (<4 years)	few indivi­duals/small area (<10%)	no or slight decline (<1% over 3 gener­ations)	low
Natural system modifications	past (and unlikely to return) and no longer limiting	few indivi­duals/small area (<10%)	slow decline (1–10% 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	Some limited conservation initiatives are in place	very low

Year	Protected Area	Designation (management category)	% coverage of IBA
1966	Riaño	National Game Reserve (IV)	43
1966	Mampodre	National Game Reserve (IV)	21
1994	Picos de Europa en Castilla y León	Parque Regional (V)	85
1994	Picos de Europa	Regional Park (-)	100

Habitat	% of IBA	Habitat detail
Shrubland	40	Scrub; Heathland; Sclerophyllous scrub, garrigue and maquis
Forest	30	Broadleaved deciduous woodland; Native coniferous woodland; Mixed woodland; Alluvial and very wet forest; Treeline ecotone
Grassland	30	Alpine, subalpine and boreal grassland; Humid grasslands
Artificial/Terrestrial	-	Forestry plantations
Rocky areas (eg. inland cliffs, mountain peaks)	-	Inland cliffs
Wetlands (inland)	-	Raised bogs

Land use	% of IBA
hunting	90
agriculture	80
forestry	30
nature conservation and research	10
water management	10

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Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Riaño (Spain). Downloaded from https://datazone.birdlife.org/site/factsheet/riaño-iba-spain on 23/12/2024.