found: Work cat.: Development and evaluation of devices designed to minimize deer-vehicle collisions, 2007:[section 4], abstract (deer whistle; deer-whistle; wildlife-warning whistle)
found: WWW search, Aug. 1, 2007(deer whistle, wildlife warning whistle)
found: Animal warning devices web site, Sept. 28, 2007(Deer whistles, mounted on the fronts of cars, trucks, and motorcycles, allegedly produce ultrasonic frequencies and/or audible sounds from the wind rushing through them. These sounds are supposed to repel or warn animals, particularly deer, elk, moose and dogs of oncoming vehicles.)
found: Wikipedia, Sept. 28, 2007(Deer horn: a deer horn, or deer whistle, is a sonic generator (whistle) mounted on automobiles intended to help prevent collisions with deer)
notfound: Web. 3;LC database, Aug. 1, 2007
