Distance-dependent responses by eavesdroppers on neighbour–stranger interactions in nightingales

摘要: In communication networks, territorial neighbours often regulate social relations using long-range signals. However, such may be affected when unfamiliar third parties threaten the integrity of neighbourhood. We investigated responses vocally interacting nightingales, Luscinia megarhynchos, that were successively challenged by simulated rivals prospecting Using playback experiments, we tested whether behaviour males is differently dependent on their with aggressively or moderately singing and information from observed interaction being used in subsequent encounters prospector. Males sang more closer they to a neighbour was threatened an rival. When themselves, these then discriminated between depending how had previously interacted neighbour. Thus, condition vocal neighbour’s situation use neighbour-stranger interactions future decision making. These findings reveal rivals’ distance matter, emphasizing importance considering multiple individuals spatial assessing functions signalling.