|The European goldfinch belongs to a group of red- or yellow-faced species.|
3, see text
A large number of bird species were at one time assigned to the genus but it became clear from phylogenetic studies of mitochondrial and nuclear DNA sequences that the genus was polyphyletic. The polyphyletic nature of the genus was confirmed by Dario Zuccon and coworkers in a comprehensive study of the finch family published in 2012. The authors suggested splitting the genus into several monophyletic clades, a proposal that was accepted by the International Ornithologists' Union. The siskins and goldfinches from the Americas formed a distinct clade and were moved to the resurrected genus Spinus, the greenfinches were moved to the genus Chloris, the twite and linnets formed another clade and were moved to the genus Linaria and finally the redpolls were moved to the genus Acanthis.
The genus Carduelis is now restricted to three European species:
- European goldfinch, Carduelis carduelis
- Citril finch, Carduelis citrinella
- Corsican finch, Carduelis corsicana
- From Latin carduus, "thistle". Thistle seeds are a favorite food of many species.
- Arnaiz-Villena, A.; Alvarez-Tejado, M.; Ruiz-del-Valle, V.; García-de-la-Torre, C.; Varela, P.; Recio, M.; Ferre, S.; Martinez-Laso, J. (1999). "Rapid Radiation of Canaries (Genus Serinus)" (PDF). Molecular Biology and Evolution 16 (1): 2–11.
- Nguembock, B.; Fjeldså, J.; Couloux, A.; Pasquet, E. (2009). "Molecular phylogeny of Carduelinae (Aves, Passeriformes, Fringillidae) proves polyphyletic origin of the genera Serinus and Carduelis and suggests redefined generic limits". Molecular Phylogenetics and Evolution 51 (2): 169–181. doi:10.1016/j.ympev.2008.10.022.
- Zuccon, Dario; Prŷs-Jones, Robert; Rasmussen, Pamela C.; Ericson, Per G.P. (2012). "The phylogenetic relationships and generic limits of finches (Fringillidae)" (PDF). Molecular Phylogenetics and Evolution 62 (2): 581–596. doi:10.1016/j.ympev.2011.10.002.
- Gill, Frank; Donsker, David (eds.). "Finches, euphonias". World Bird List Version 5.2. International Ornithologists' Union. Retrieved 5 June 2015.
- Carduelis videos, photos and sounds on the Internet Bird Collection