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Laser scarecrows reduce avian corn‐foraging propensity but not bout length in aviary trials
Pest Management Science ( IF 3.8 ) Pub Date : 2025-01-13 , DOI: 10.1002/ps.8607
Kathryn E. Sieving, Sean T. Manz, Rebecca N. Brown, Bryan M. Kluever

BACKGROUNDBehavioral mechanisms underlying avian deterrence by lasers in sweet corn are not known, and we evaluated them in a rigorous aviary experiment. Eighteen flocks of European starlings (Sturnus vulgaris) foraged on sweet corn for several days in control and laser treated plots with ripe sweet corn while data were collected on where birds were distributed and how long birds foraged on corn. In 16 trials, fresh ears were presented on wooden sticks, and in two trials birds foraged on natural corn grown from seed. Birds were sexed and boldness scores were obtained. We predicted that (a) birds would avoid foraging on ears in laser plots and (b) if they did feed, lasers would reduce foraging bout duration.RESULTSLaser treatments reduced the probability that birds would feed on sweet corn ears, and to a striking degree in Natural Trials. We did not detect direct effects of laser exposure on foraging bout duration, but when corn foliage was low, bolder birds foraged longer in laser plots.CONCLUSIONWe provide the first quantification of bird foraging behavior in laser treated corn. The central mechanism underlying the effectiveness of laser scarecrows at reducing sweet corn damage is the prevention of settlement of depredating birds onto ripe ears. © 2025 Society of Chemical Industry. This article has been contributed to by U.S. Government employees and their work is in the public domain in the USA.

中文翻译:


激光稻草人在鸟舍试验中减少了鸟类玉米觅食的倾向,但不减少了回合长度



背景激光对甜玉米进行鸟类威慑的机制尚不清楚,我们在严格的鸟舍实验中对其进行了评估。18 群欧洲椋鸟 (Sturnus vulgaris) 在受控的甜玉米上觅食数天,并用成熟的甜玉米进行激光处理地块,同时收集有关鸟类分布地点和鸟类在玉米上觅食多长时间的数据。在 16 项试验中,新鲜的玉米穗被放在木棍上,在 2 项试验中,鸟类以种子生长的天然玉米为食。对鸟类进行性别鉴定并获得胆度分数。我们预测 (a) 鸟类在激光图中会避免在耳朵上觅食,并且 (b) 如果它们确实进食,激光会减少觅食持续时间。结果Laser 处理降低了鸟类以甜玉米穗为食的可能性,并且在自然试验中达到了惊人的程度。我们没有检测到激光照射对觅食持续时间的直接影响,但是当玉米叶子低时,更大胆的鸟类在激光地块中觅食的时间更长。结论我们首次提供了激光处理玉米中鸟类觅食行为的量化。激光稻草人在减少甜玉米损害方面的有效性的核心机制是防止捕食的鸟类在成熟的耳朵上定居。© 2025 化工学会.本文由美国政府雇员提供,他们的工作在美国属于公共领域。
更新日期:2025-01-13
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