Song: Long unmusical growled "ker-ah" or "ker-ah-ooow" song, much rougher than Red-winged Blackbird's song. Spring flocks of singing males have been described as sounding like cats fighting. Call notes are generally rough nasal growls or gurgling including a "wuk" or "kuk" flight call, "chu-raah" alarm call, and "chuck" contact call.
Sound: Kevin J. Colver; Apr; CA; Adult; Male; Primary Sound;