Song: Calls are clear sharp "ticks" and "chips" that run together into a rapid twitter ending with buzzy trills "tip tip tip tip tzeeeip". Higher pitched than Chimney Swift, similar to the buzzing calls of Eastern Kingbirds.
Sound: David S. Herr (
Macaulay Library, Cornell # 63126); 1992 Jul 18; USA, Oregon; 37 km W from La Grande, Starkey Exp. Forest, Umatilla Co; Adult; Primary Sound;