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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 (2009)	8–15 pairs	C6
Rock Ptarmigan Lagopus muta	LC	resident (2010)	12–20 pairs	C6
Western Capercaillie Tetrao urogallus	LC	resident (2010)	5–7 males	C6
Boreal Owl Aegolius funereus	LC	resident (2010)	max 3 pairs	C6
Bearded Vulture Gypaetus barbatus	NT	resident (2009)	min 9 pairs	B2, C2, C6
Egyptian Vulture Neophron percnopterus	EN	breeding (2008)	min 14 pairs	A1, B2, C1, C2, C6
Griffon Vulture Gyps fulvus	LC	resident (2008)	min 249 pairs	B1iii, C2, C6
Golden Eagle Aquila chrysaetos	LC	resident (2008)	8–9 pairs	C6
Black Woodpecker Dryocopus martius	LC	resident (2010)	15–25 pairs	C6
Peregrine Falcon Falco peregrinus	LC	resident (2008)	4–10 pairs	C6
Red-billed Chough Pyrrhocorax pyrrhocorax	LC	resident (2001)	min 330 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
Natural system modifications	happe­ning now	most of popul­ation/area (50–90%)	slow decline (1–10% over 3 gener­ations)	high
Biological resource use	likely in long term (>4 years)	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
Little/none of area covered (<10%)	No management planning has taken place	Substantive conservation measures are being implemented, but these are not compre­hensive and are limited by resources and capacity	low

Year	Protected Area	Designation (management category)	% coverage of IBA
1966	Los Valles	National Game Reserve (IV)	54
1987	Ukerdi	Reserva Integral (Ib)	1
1987	Ukerdi	Integral Nature Reserve (-)	1
1987	Aztaparreta	Reserva Integral (Ib)	<1
1991	Pinos de Surio	Monumento Natural (III)	-
2003	Larra	Reserva Natural (IV)	4
2006	Valles Occidentales	Parque Natural (V)	50

Habitat	% of IBA	Habitat detail
Forest	40	Broadleaved deciduous woodland; Native coniferous woodland; Mixed woodland
Grassland	40	Alpine, subalpine and boreal grassland
Shrubland	20	Scrub; Heathland

Land use	% of IBA
hunting	90
agriculture	80
forestry	40
not utilised	10

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Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Belagua-Ansó-Hecho (Spain). Downloaded from https://datazone.birdlife.org/site/factsheet/belagua-ansó-hecho-iba-spain on 23/12/2024.