Both sexes produce a monosyllabic flight call, variously transcribed as "chreek or syurk" (Stiles and Skutch 1989), "titch", "a nasal zurk" (Hilty 2003), and as "a loud, rising sweet" (Lane, in Schulenberg et al. 2010).
During the breeding season males assemble in leks to sing and display (Snow 1974). For a representative audio recording with sonogram, see audio
The song has been described as a “loud, barking note” which is repeated many times at regular intervals (Skutch 1964). Though this sound is usually a monosyllable "waatch", males sometimes use a disyllabic variation instead: "waatch-ee". Males also make a high-pitched, aggressive chase call described as a rapid “chit-chit-chit,” and a mechanical-sounding "tock" during aerial displays (Snow 1974).