Ultrasonic Repellents Don't Affect Birds Behavior

The purpose of this would be to figure out if ultrasonic repellents work regularly, if they are worth the investment and if they could be used commercially such as in airports to keep birds away from planes. and hopefully reduce the cost of the yearly damage cause by birds to planes. I put up 2 feeders one with an ultrasonic repellent and one without. On the one with the ultrasonic feeder i put a tracking camera to record if anything came. I record the data of the weight of the seed each time I fill the feeder three time a week. Most of the time the control had less eaten out of it then then the ultrasonic feeder. Ultrasonic feeders do not affect the behavior of birds in any way and are not worth using.

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center for teaching an learning
Upland - Forest
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