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Why a variety of social animals vocalize during agonistic foraging interactions remains obscure. One possibility is that these signals advertise the signaller's competitive ability, playing a role in the defence of food resources, yet there is limited evidence in support of this idea. Here, we used adult female Asian particoloured bats, Vespertilio sinensis, to test whether individual variation in...
Although evolutionary theory predicts that parents should discriminate between their own and others' offspring when levels of parental care are large, in some colonial breeding mammals, strong selective pressure would be expected to drive the evolution of mutual recognition between parents and offspring. Although less well studied than parental discrimination, in both birds and mammals, offspring...
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