Reference
Manuel Nogales, Aurelio Martín, Guillermo Delgado, Keith Emmerson (1988): Food spectrum of the feral cat (Felis catus L., 1758) in the juniper woodland on El Hierro (Canary Islands) – Bonn zoological Bulletin - früher Bonner Zoologische Beiträge. – 39: 1 - 6.