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    The dataset contains records of riparian birds (Aves) collected in the lower valley of the River Tua and included in the Ecological Monitoring Program (2011-17) 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 2012-2017, and in the spring of 2011-2017 during field visits to five (2011-2014) or seven (2015-2017) transects located in the riverbeds of the lower Tua valley, in the area affected by the dam, and in a control area, upstream. All observations were made with binoculars and/or telescopes.