Eavesdropping on other species: mutual interspecific understanding of urgency information in avian alarm calls
Some birds eavesdrop on the alarm calls of other species, but little is known about the specific information obtained. Fleeing in response to nonurgent alarms, such as those given for distant predators, wastes time and energy and so individuals could benefit from decoding information about urgency. White-browed scrubwrens, Sericornis frontalis, and superb fairy-wrens, Malurus cyaneus, flee in response to each other's aerial alarm calls, and scrubwrens communicate urgency by including more...[Show more]
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