The Pyrrhuloxia’s clear, whistled songs are very similar to those of the Northern Cardinal (one familiar example being the repeated what-cheer song) though slightly softer and more reedy. Males have around a dozen songs, each 2–3 seconds long, which they sing frequently to establish and maintain territories. Two neighbors may sing in unison or alternately across a territory boundary. Females occasionally sing while defending nests.
Pyrrhuloxias make a sharp, metallic cheek or chip note, similar to that of the Northern Cardinal but lower in pitch. Other calls include a chattering contact call, a series of soft chipping notes during foraging, and a tseep call used by begging fledglings. Pyrrhuloxias often call while in flight.
Males make fluttering sounds with their wings while flying after females during courtship.