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Nestling birds could minimize the risk of being overheard by predators by becoming silent after parental alarm calls, begging only when parents arrive with food, and independently assessing cues that a predator is nearby. Begging only to parents is challenging because young that respond quickly can be more likely to be fed, so there is a benefit of using subtle cues of parental arrival, potentially...
Vocalizing nestlings are vulnerable to eavesdropping by predators, but may reduce risk through behavioural tactics such as responding with silence to adult alarm calls. Nestlings may also assess danger independently, although there has been little investigation of this possibility. Additionally, nestlings might use parental signals to modify their response to possible cues of danger to reduce the...
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