Storks foraging on a local landfill site, where water is being sprayed over the waste in order to dilute the acids that are being released during the waste decomposition. The Spanish populations of the White Stork (Ciconia ciconia) suffered a marked decline in Spain until de 1980s of the last century due to the alteration of their feeding areas. However, in the last decades those populations have recovered mainly due to new food resources: rubbish dumps. An unlimited supply of food all year round also means exposure to several human-generated pollutants.