Systema Naturae
The siskin was first was described by Carl Linnaeus in his landmark 1758 10th edition of "Systema Naturae" as "Fringilla spinus", in the 10th edition of "Systema Naturae". In 1760, Brisson described the genus "Carduelis", where this species was then placed. Recent taxonomic studies suggest placing it in the genus "Spinus".