Song: Song is a short (less than 2 seconds) colourless trill, usually with a characteristic wavering in pitch, but sometimes all on one pitch. Also has a slight crescendo towards the centre of the song. Not as dry as Chipping Sparrow; not as ringing as Dark-eyed Junco. Compare also to Pine Warbler, Palm Warbler, and Swamp Sparrow.
Sound: Lang Elliott
; 1993 May 31; Canada, Manitoba; Adult; Primary Sound;