“…It is well-known that some bird species can cause extensive damage to agricultural crops, as reported from many parts of the world (Jones, 1972;Pinowski and Kendeigh, 1977;De Gracio, 1978;Wright et al, 1980;Bruggers and Ruelle, 1981;Bellatreche, 1986;Dhindsa and Saini, 1994;Huber et al, 2002;Contreras et al, 2003;Tracey et al, 2007;Behidj-Benyounes et al, 2011;De Melo and Cheschini, 2012;De Mey et al, 2012;Canavelli et al, 2014;Codesido et al, 2015;De Rijk, 2015;Loza-Del Carpio et al, 2016). Based on records of historical archives, we recently investigated the incidence and spatio-temporal variation of bird pests in the region of Extremadura (southwestern Spain) over four centuries (Torres-Vila et al, 2009;Ferrero-García et al, 2014Torres-Vila et al, 2015). Our research showed that passerines, particularly sparrows (house sparrow Passer domesticus and/or Spanish sparrow Passer hispaniolensis), were the birds that caused most harm to Spanish agriculture in the past.…”