American Hunter - October 2019 - 41

Those tests proved to Woods that he
shouldn't shoot past 20 yards unless he
starts shooting a faster bow.

Quieting Clothing
Science and technology might never
make bows quiet enough to defeat a
deer's hearing, but advances in fabrics
are quieting our hunting clothes. Miller,
for example, used his deer-hearing
expertise to help Sitka Gear make its
current Fanatic clothing lineup twice
as quiet as its predecessor. Both Fanatic
lines use Windstopper technology, and
are designed for white-tailed deer hunters in treestands.
Miller and James Black, an acoustical
engineer and instructor from Montana
State University, monitored a soundproof room kept at minus 4 degrees
Fahrenheit as five "hunters" wearing
old and new Fanatic systems took turns
simulating movements deer often hear.
These motions included drawing a bow,
brushing up against tree bark and pulling
continued on p. 82

ยป

DEER WHISTLES ON VEHICLES:
NO PROOF THEY WORK
You might wonder why university researchers and others tried to assess
a white-tailed deer's hearing ability the past 40 years.
Consumer-based concerns spurred several studies: Can deer hear
high-pitched sounds supposedly made by "deer whistles" mounted on
the front of cars and trucks? And if so, do deer flee the sound by running
the opposite way?
The whistles' effectiveness proved difficult to assess, partly because
some whistles didn't produce any sound at any speed, while others
produced sounds, but not necessarily the high-frequency noises the manufacturers advertised.
As University of Georgia researcher Sharon Valitzki wrote in 2007: "Previous research on vehicle-mounted auditory deterrents was confounded
by use of commercially produced devices lacking proper function and sufficient sound intensity to be audible to deer in roadway conditions."
Therefore, Valitzki and her team used vehicle-mounted speakers on
its front and sides to broadcast high-frequency noise in the deer's known
hearing range as the vehicle moved along. After documenting how 319
deer responded, Valitzki concluded the reactions did not prevent accidents.
Roughly 60 percent of the reactions were "neutral," meaning the deer
simply didn't react to the passing vehicle. Only the lowest frequency sound,
at .28 kHz, produced a "significant" response. Unfortunately, it made the
deer more likely to move onto the road.
Valitzki concluded: "Auditory deterrents do not appear to be appropriate for prevention of deer-vehicle collisions."


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American Hunter - October 2019

Table of Contents for the Digital Edition of American Hunter - October 2019

Contents
American Hunter - October 2019 - Cover1
American Hunter - October 2019 - Cover2
American Hunter - October 2019 - 1
American Hunter - October 2019 - Contents
American Hunter - October 2019 - 3
American Hunter - October 2019 - 4
American Hunter - October 2019 - 5
American Hunter - October 2019 - 6
American Hunter - October 2019 - 7
American Hunter - October 2019 - 8
American Hunter - October 2019 - 9
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American Hunter - October 2019 - Cover3
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