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

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
Bearded Vulture Gypaetus barbatus	NT	resident	2010	min 3 breeding pairs	B2, C2, C6
Egyptian Vulture Neophron percnopterus	EN	breeding	2010	24-26 breeding pairs	A1, B2, C1, C2, C6
Griffon Vulture Gyps fulvus	LC	resident	2010	min 665 breeding pairs	A4ii, B1iii, C2, C6
Golden Eagle Aquila chrysaetos	LC	resident	2010	min 3 breeding pairs	C6
Black Woodpecker Dryocopus martius	LC	resident	1999	10-15 breeding pairs	C6
Peregrine Falcon Falco peregrinus	LC	resident	2010	min 9 breeding pairs	C6

1. The current IUCN Red List category. The category at the time of the IBA criteria assessment (2011) may differ.

Year	Protected Area	Designation	% overlap with IBA
1987	Foz de Arbayun	Reserva Natural	6
1987	Acantilados de la Piedra y San Adrián	Reserva Natural	2
1987	Foz de Burgui	Reserva Natural	1
1987	Foz de Benasa	Reserva Natural	1
1987	Foz de Lumbier	Reserva Natural	<1
1987	Foz de Burgui	Natural Reserve	1
1990	Arbaiun-Leire	Special Protection Area (Birds Directive)	40
1990	Foces de Benasa y Burgui	Special Protection Area (Birds Directive)	21
1991	Sierra de San Miguel	Special Protection Area (Birds Directive)	14
1991	Nogal de Garde	Monumento Natural	-
1995	Mendibeltza	Wild Fauna Reserve	1
1997	Foz de Salvatierra	Site of Community Importance (Habitats Directive)	<1
1999	Sierra de Leire y Foz de Arbaiun	Site of Community Importance (Habitats Directive)	40
1999	Sierra de Illón y Foz de Burgui	Site of Community Importance (Habitats Directive)	21
1999	Sierra de San Miguel	Site of Community Importance (Habitats Directive)	15
1999	Río Salazar	Site of Community Importance (Habitats Directive)	1
1999	Sierra de Ugarra	Site of Community Importance (Habitats Directive)	1
1999	Ríos Eska y Biniés	Site of Community Importance (Habitats Directive)	<1

Habitat1	Habitat detail	% of IBA
Forest	Broadleaved deciduous woodland, Native coniferous woodland, Mixed woodland, Broadleaved evergreen woodland	80
Shrubland	Scrub, Heathland, Sclerophyllous scrub, garrigue and maquis	20
Artificial/Terrestrial	Arable land	-
Grassland	Alpine, subalpine and boreal grassland	-
Rocky areas (eg. inland cliffs, mountain peaks)	Inland cliffs	-

1. IUCN Habitat classification.

Land use	% of IBA
agriculture	90
hunting	90
forestry	80

---

Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Leyre, Illón and San Miguel mountain ranges (Spain). Downloaded from https://datazone.birdlife.org/site/factsheet/leyre-illón-and-san-miguel-mountain-ranges-iba-spain on 23/11/2024.