Nestling begging calls increase predation risk by corvids
نویسندگان
چکیده
منابع مشابه
Eastern chipmunks increase their perception of predation risk in response to titmouse alarm calls
Vocally signaling a predator’s presence through alarm calls creates public information regarding risk in the environment. If having this information confers an advantage, eavesdropping behavior, the use of information in signals by individuals other than the primary target, is expected to evolve. Thus, eavesdropping for information on predation risk to avoid predators may be common. We describe...
متن کاملThe energetic cost of begging behaviour in nestling house wrens.
This study presents data relevant to the hypothesis that the energy expenditure associated with begging influences the signalling of need by nestling birds. We used open-circuit respirometry to measure the energy costs of resting, begging and non-begging activities in nestling house wrens, Troglodytes aedon, ranging in age from 1 to 11 days post-hatching. Across all ages, begging caused a 27% i...
متن کاملThe adaptive value of parental responsiveness to nestling begging.
Despite extensive theoretical and empirical research into offspring food solicitation behaviour as a model for parent-offspring conflict and communication, the adaptive value of parental responsiveness to begging has never been tested experimentally. Game theory models, as well as empirical studies, suggest that begging conveys information on offspring state, which implies that parental investm...
متن کاملVariable Food Begging Calls Are Harbingers of Vocal Learning
Vocal learning has evolved in only a few groups of mammals and birds. The developmental and evolutionary origins of vocal learning remain unclear. The imitation of a memorized sound is a clear example of vocal learning, but is that when vocal learning starts? Here we use an ontogenetic approach to examine how vocal learning emerges in a songbird, the chipping sparrow. The first vocalizations of...
متن کاملCalling at a cost: elevated nestling calling attracts predators to active nests.
Begging by nestling birds has been used to test evolutionary models of signalling but theory has outstripped evidence. Eavesdropping predators potentially impose a cost on begging that ensures signal honesty, yet little experimental evidence exists for such a cost at active nests because the use of artificial nests, long playback bouts and absence of parents may have exaggerated costs. We broad...
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ژورنال
عنوان ژورنال: Animal Biology
سال: 2019
ISSN: 1570-7555,1570-7563
DOI: 10.1163/15707563-20181058