Nature
Birds worldwide share evolved warning cry against parasites
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An international team of researchers has discovered that birds across four continents produce nearly identical whining vocalizations to warn against brood parasites. This learned response builds on an innate sound, marking the first known example of such a hybrid vocalization in animals. The findings, published October 3 in Nature Ecology and Evolution, highlight how natural selection shapes cooperative communication.
Low-altitude mountain hiking gains popularity for seasonal enjoyment
Hiking in low-altitude mountains is growing in popularity. Members of the Oiraku Mountaineers Club in Kamakura, Kanagawa Prefecture, shared the appeal of trails near urban areas. It offers enjoyment for beginners and supports lifelong health.