Environmental birdwatching trails in Jacetania Pyrenees Trail 1- Zuriza – river Veral Trail 2: Gamueta forest – Linza refuge Trail 3 Zuriza – Achar de Alano Trail 4- Selva de Oza Trail 5 Selva de Oza – Aguas Tuertas Trail 6: Garcipollera valley Trail 7: Las Blancas – López Huici mountain refuge Trail 8a: Somport – Cascade Aspe Trail 8b: Somport – Canal Roya and Anayet Trail 9: St. Engracia – Gorge (Foz) of Biniés Trail 10: Berdún – Scrubland along the river Aragón Trail 11: Puente la Reina – Martes scrubland Trail 12: Circular route Jaca – Peña Oroel – St Cruz Serós – San Juan de la Peña Trail 13: Roads leading up to San Juan de la Peña Ornithological observatory BIRDS AND ECOSYSTEMS BUSINESSES AND SERVICES BIRDING TRAILS AND TRACKS