Bouchard, Jenn. “The Role of in-Flight Vocalizations of the Chimney Swift, Chaetura Pelagica”. Canadian Acoustics 33, no. 4 (December 1, 2005): 46–47. Accessed August 27, 2024. https://jcaa.caa-aca.ca/index.php/jcaa/article/view/1777.