Birds; terrestrial; occurrence; winter; observations; point counts
Type of resources
Contact for the resource
The dataset contains records of terrestrial birds (Aves) collected in the lower valley of the River Tua and included in the Ecological Monitoring Program (2011) of the Environmental Impact Assessment of the Foz Tua Hydroelectric Dam, promoted by EDP – Energias de Portugal, S.A. Data were collected in the winter of 2011-2017 during field visits to 28 (2011), 27 (2012) or 60 (>2013) sampling points with favorable habitats in 26 2x2 km squares within a 5-km radius buffer around the Tua valley, directly or indirectly affected by the Foz-Tua dam. All observations were made with binoculars and/or telescopes.