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

Year	Protected Area	Designation (management category)	% coverage of IBA
1987	Foz de Arbayun	Reserva Natural (IV)	6
1987	Acantilados de la Piedra y San Adrián	Reserva Natural (IV)	2
1987	Foz de Burgui	Reserva Natural (IV)	1
1987	Foz de Benasa	Reserva Natural (IV)	1
1987	Foz de Lumbier	Reserva Natural (IV)	<1
1987	Foz de Burgui	Natural Reserve (-)	1
1991	Nogal de Garde	Monumento Natural (III)	-
1995	Mendibeltza	Wild Fauna Reserve (-)	1

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

Land use	% of IBA
agriculture	90
hunting	90
forestry	80

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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 24/12/2024.