finch is classified as a Species of Least Concern by the IUCN. References Sources Clement, Peter; Harris, Alan & Davis, John (1993): Finches and Sparrows: an identification guide. Christopher Helm, London. Pasquet, E. & Thibault, J.-C. (1997): Genetic differences among mainland and insular forms of the Citril Finch Serinus citrinella. Ibis 139(4): 679–684. (HTML abstract) Sangster, George (2000): Genetic distance as a test of species boundaries in the Citril Finch Serinus citrinella: a critique and taxonomic reinterpretation. Ibis 142(3): 487–490. Sangster, George; Knox, Alan G.; Helbig, Andreas J. & Parkin, David T. (2002): Taxonomic recommendations for European birds. Ibis 144(1): 153–159. Further reading Arnaiz-Villena A, Alvarez-Tejado M, Ruiz-del-Valle V, Garcia-de-la-Torre C, Varela P, Recio MJ, Ferre S, Martinez-Laso J. (1999): Rapid radiation of canaries (Genus Serinus). Förschler, Marc Imanuel & Kalko, Elisabeth K.V. (2007): Geographical differentiation, acoustic adaptation and species boundaries in mainland citril finches and insular Corsican finches, superspecies Carduelis [citrinella]. Journal of Biogeography 34(9). (HTML abstract) External links Audio recordings from Xeno-canto Oiseaux Photos citril finch Birds of Europe citril finch Taxa named by Peter Simon Pallas