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Scientists played human shouts, wolf and cougar calls near British Columbia crop fields; deer fled 64% of the time from human voices, but quickly learned to ignore the deterrents

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Scientists played human shouts, wolf and cougar calls near British Columbia crop fields; deer fled 64% of the time from human voices, but quickly learned to ignore the deterrents

What scares a deer away from a crop field, a wolf howl, a cougar call or the sound of a human shouting? A 2025 study by researchers from the University of Alberta and King’s University found that, among the sounds tested, human shouts produced the strongest flight response in both deer and elk. But the … Read more

In 1935, black drongos were introduced on Rota to control crop pests; decades later the aggressive birds spread to Guam and became a threat to native birds

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In 1935, black drongos were introduced on Rota to control crop pests; decades later the aggressive birds spread to Guam and became a threat to native birds

A juvenile and an adult Black Drongo perch on a tree branch (ANI Photo) In 1935, the Japanese South Seas Development Company made a decision that would have repercussions for Mariana Islands’ ecosystems for nearly 100 years. In search of a natural method for controlling agricultural pests, they imported black drongos (Dicrurus macrocercus) from Taiwan … Read more