hance communication between the driver and observers, reducing the need for loud talking or tapping.


Conducting spotlight surveys Use a vehicle with an open bed


so observers have an unobstructed view while traversing ranch roads. Ideally, surveyors include a driver, two observers and a data recorder. Duties of personnel are:


1) The driver should travel 5 to 8 miles per hour and tell ob- servers when to take visibility estimates.


2) Ideally, 2 observers are behind the cab, 1 on each side. They should scan the area constantly, covering an arc from the front center to the rear center of the vehicle to look for deer or their eyes’ refl ection. Incidental sight- ings of other animals may need to be recorded, depending on survey objectives.


3) Visibility estimates should be taken every one-tenth mile. Ob- servers estimate the distance in yards at right angles to the vehicle. Deer detection and iden- tifi cation is questionable beyond 250 yards, where the maximum visibility is arbitrarily set. Vis- ibility estimates should not be taken across canyons, through trees, or past other objects or to- pography that may conceal deer.


4) The person recording data reg- isters pertinent pre- and post- survey information, visibility estimates and deer sightings. This information should include the ranch name, starting and ending time, weather conditions, names of personnel conducting the spotlight survey, and num- ber of fawns, does, bucks, un- known deer and other animals observed. ❚


tscra.org #CattleRaisers January 2017 The Cattleman 83


We specialize in: Calving Ease Bulls


Energy Efficient Cows High Quality Beef on Grass


Bill & Yvonne Woods • woodston@industryinet.com • www.scotchirishherd.com Mark Wells • 979-877-8969


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