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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
Grey Partridge Perdix perdix	LC	resident	2009	8-15 breeding pairs	C6
Rock Ptarmigan Lagopus muta	LC	resident	2010	12-20 breeding pairs	C6
Western Capercaillie Tetrao urogallus	LC	resident	2010	5-7 males	C6
Boreal Owl Aegolius funereus	LC	resident	2010	max 3 breeding pairs	C6
Bearded Vulture Gypaetus barbatus	NT	resident	2009	min 9 breeding pairs	B2, C2, C6
Egyptian Vulture Neophron percnopterus	EN	breeding	2008	min 14 breeding pairs	A1, B2, C1, C2, C6
Griffon Vulture Gyps fulvus	LC	resident	2008	min 249 breeding pairs	B1iii, C2, C6
Golden Eagle Aquila chrysaetos	LC	resident	2008	8-9 breeding pairs	C6
Black Woodpecker Dryocopus martius	LC	resident	2010	15-25 breeding pairs	C6
Peregrine Falcon Falco peregrinus	LC	resident	2008	4-10 breeding pairs	C6
Red-billed Chough Pyrrhocorax pyrrhocorax	LC	resident	2001	min 330 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.

Pressure (threats to the trigger species and/or their habitats)
Threat	Timing	Scope	Severity	Result
Natural system modifications	happening now	majority/most of area/population (50-90%)	slow but significant deterioration	high
Biological resource use	likely in long term (beyond 4 years)	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
Little/none of site 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	% overlap with IBA
1966	Los Valles	National Game Reserve	54
1987	Ukerdi	Reserva Integral	1
1987	Aztaparreta	Reserva Integral	<1
1987	Ukerdi	Integral Nature Reserve	1
1990	Los Valles	Special Protection Area (Birds Directive)	49
1990	Ezkaurre-Arrigorrieta	Special Protection Area (Birds Directive)	9
1991	Larra-Aztaparreta	Special Protection Area (Birds Directive)	7
1991	Pinos de Surio	Monumento Natural	-
1997	Los Valles	Site of Community Importance (Habitats Directive)	51
1999	Sierra de Arrigorrieta y Peña Ezkaurre	Site of Community Importance (Habitats Directive)	8
1999	Larra-Aztaparreta	Site of Community Importance (Habitats Directive)	7
1999	Larrondo-Lakartxela	Site of Community Importance (Habitats Directive)	3
1999	Ríos Eska y Biniés	Site of Community Importance (Habitats Directive)	<1
2000	Los Valles - Sur	Site of Community Importance (Habitats Directive)	7
2003	Larra	Reserva Natural	4
2006	Valles Occidentales	Parque Natural	50

Habitat1	Habitat detail	% of IBA
Forest	Broadleaved deciduous woodland, Native coniferous woodland, Mixed woodland	40
Grassland	Alpine, subalpine and boreal grassland	40
Shrubland	Scrub, Heathland	20

1. IUCN Habitat classification.

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 23/11/2024.