Song: Pairs duet early in breeding season. Male makes a two note nasal trumpeting "coo-coo" female answers with a short clear "eep" or rasping "tsshh". Rasping chatter and chuck notes given by both sexes. When disturbed in burrow makes a rasping rattle similar to warning rattle of a rattlesnake.
Sound: Lang Elliott
; 1993 May 24; Canada, Manitoba; Adult; Primary Sound;