Leyre, Illón and San Miguel mountain ranges

Country/territory: Spain

IBA Criteria met: A1, A4ii, B1iii, B2, C1, C2, C6 (2011)
For more information about IBA criteria please click here

Area: 23,500 ha

Protection status:


Site description
An area of limestone cliffs and several large gorges. The vegetation includes alpine grassland, scrub, and Quercus, Fagus and Pinus forests. The main human activities are forestry, hunting and livestock-grazing.

Key biodiversity
This is an important site for cliff-nesting birds and a wintering site for Perdix perdix. The site holds the largest Gyps fulvus colonies in Spain.

Recommended citation
BirdLife International (2021) Important Bird Areas factsheet: Leyre, Illón and San Miguel mountain ranges. Downloaded from on 17/04/2021.