Área Natural Protegida Estatal Presa de Silva y Zonas Aledañas. 02/02/11; Guanajuato; 3,934 ha; 20°55'37"N 101°50'48"W. State Natural Protected Area. A number of dams with shallow waters presenting different habitats, including emerged vegetation and flooded vegetation areas whose climatic, trophic, structural and functional characteristics make them important sites for aquatic birds, both resident and migratory. The migratory birds share distribution of habitat with the USA and Canada within the Central Americas Flyway. There are records of 79 species of birds in the site such as Anas platyrhynchos diazi, Anas platyrhynchos platyrhynchos, Fulica americana, Recurvirostra americana, Ardea alba, Egretta thula, and Charadrius vociferus, among others. The site plays an important role in sustaining terrestrial wildlife under adequate water quality conditions in the region. The Ramsar Site is located within the Natural Protected Area Presa de Silva y Zonas Aledañas declared in 1997 and contains a portion outside the protected area, including important groundwater recharge areas and other streams that have to be protected as well. Ramsar Site no. 2024. Most recent RIS information: 2011.