Soft, sweet siskin-like twittering and rapid chattering interspersed with buzzy/wheezy notes, typical of Spinus; song a jumbled warble. NOTE: Xeno-canto currently holds essentially no recordings of wild Spinus cucullatus — search 'Red Siskin' (code redsis1) on the Macaulay Library (search.macaulaylibrary.org) for the best available audio; supplement with general Spinus vocal structure for training.