Olivaceous Siskin (Spinus) [XC260074]
by John V. Moore from Napo: 'Caba\u00f1as San Isidro', 1-2 km SW Cosanga, Ecuador (song)
Olivaceous Siskin (Spinus olivaceus) [XC638693]
by Guilherme Melo from Miguelito Pipeline Rd., Cochabamba dept., Bolivia (song)
Subspecies
No subspecies.
Has been considered conspecific with Hooded Siskin (Spinus magellanicus), differing mainly in habitat preference, but hybridizes in area of range overlap in north-western Peru. Further research is required.