Avian alarm calls and mobbing behaviour represent complex communication systems that enable birds to warn conspecifics and heterospecifics of impending predatory threats. These vocal signals not only ...
Source: Ragnhild and Neil Crawford, via Wikimedia Commons. The Kalahari region of southern Africa is home to a sparrow-sized bird called the sociable weaver (Philetairus socius). These birds might be ...
Wild black-tailed prairie dogs use alarm calls to warn one another of predators, and some grassland birds are listening in. Photo credit: Andrew Dreelin, Smithsonian’s National Zoo and Conservation ...
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