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Recognition of Predator Type and Risk Level in Azure‐Winged Magpies (Cyanopica cyanus) Through Visual and Auditory Cues

机译:通过视觉和听觉线索识别天翅喜鹊 (Cyanopica cyanus) 的捕食者类型和风险水平

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摘要

Predation events are an important key factor determining the survival and reproduction of prey species. To cope, prey species have evolved various anti‐predator strategies, including mechanisms for accurate predator identification and distinguishing predator types and risk levels. Birds rely on visual, auditory, and olfactory cues to perceive and categorize predators. However, previous studies have focused on single sensory modalities and have largely been conducted during breeding seasons. Thus, analyses of the accuracy and differences in predator recognition cues, especially during non‐breeding periods, are needed. In this study, predator recognition in Azure‐winged Magpies ( Cyanopica cyanus ) was evaluated during the non‐breeding season. We examined responses to two predators, Common Kestrel ( Falco tinnunculus ) and Domestic Cat ( Felis catus ), and two non‐predators, Oriental Magpie (Pica serica) and Oriental Turtle Dove ( Streptopelia orientalis ). Using specimens and playback experiment, the ability of Azure‐winged magpies to identify threats through both visual and auditory cues was evaluated. The results showed that Azure‐winged Magpies can identify predator types through both visual and auditory cues, accurately distinguish threat levels, and adjust their foraging behavior accordingly. Notably, they exhibited the strongest anti‐predator response to Domestic Cats (frequently encountered under natural conditions), as evidenced by longer observation times, shorter foraging duration, and quicker flight responses. The results indicate that Azure‐winged Magpies can correctly identify predator types and threat levels through both visual and auditory cues and exhibit stronger anti‐predator behaviors with increasing apparent threat levels.
机译:捕食事件是决定猎物物种生存和繁殖的重要关键因素。为了应对,猎物物种已经进化出各种反捕食者策略,包括准确识别捕食者和区分捕食者类型和风险水平的机制。鸟类依靠视觉、听觉和嗅觉线索来感知和分类捕食者。然而,以前的研究集中在单一感觉模式上,并且主要在繁殖季节进行。因此,需要分析捕食者识别线索的准确性和差异,尤其是在非繁殖期。在这项研究中,评估了蓝翅喜鹊 ( Cyanopica cyanus ) 在非繁殖季节的捕食者识别能力。我们检查了对两种捕食者,普通红隼 (Falco tinnunculus) 和家猫 (Felis catus) 以及两种非捕食者东方喜鹊 (Pica serica) 和东方斑鸠 (Streptopelia orientalis) 的反应。使用标本和回放实验,评估了天翼喜鹊通过视觉和听觉线索识别威胁的能力。结果表明,天青翅喜鹊可以通过视觉和听觉线索识别捕食者类型,准确区分威胁级别,并相应地调整它们的觅食行为。值得注意的是,它们对家猫表现出最强的反捕食者反应(在自然条件下经常遇到),更长的观察时间、更短的觅食时间和更快的飞行反应证明了这一点。结果表明,天蓝色翅喜鹊可以通过视觉和听觉线索正确识别捕食者类型和威胁级别,并随着明显威胁级别的增加而表现出更强的反捕食者行为。

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