PDF(Pubmed)
Abstract：
Predation risk may affect the foraging behavior of birds. However, there has been little research on the ability of domestic birds to perceive predation risk and thus adjust their feeding behavior. In this study, we tested whether domestic budgerigars (Melopsittacus undulatus) perceived predation risk after the presentation of specimens and sounds of sparrowhawks (Accipiter nisus), domestic cats (Felis catus), and humans, and whether this in turn influenced their feeding behavior. When exposed to visual or acoustic stimuli, budgerigars showed significantly longer latency to feed under sparrowhawk, domestic cat, and human treatments than with controls. Budgerigars responded more strongly to acoustic stimuli than visual stimuli, and they showed the longest latency to feed and the least number of feeding times in response to sparrowhawk calls. Moreover, budgerigars showed shorter latency to feed and greater numbers of feeding times in response to human voices than to sparrowhawk or domestic cat calls. Our results suggest that domestic budgerigars may identify predation risk through visual or acoustic signals and adjust their feeding behavior accordingly.
摘要：
捕食风险可能会影响鸟类的觅食行为。然而,关于家禽感知捕食风险从而调整其摄食行为的能力的研究很少。在这项研究中,我们测试了在呈现标本和麻雀（Accipiternisus）的声音后，国内的鹦鹉（Melopsittacusundulatus）是否感知到捕食风险，家猫（Feliscatus），和人类,以及这是否反过来影响了他们的喂养行为。当暴露于视觉或听觉刺激时，鹦鹉在雀鹰下表现出明显更长的进食潜伏期，家猫,和人类治疗比对照。Budgerigars对声音刺激的反应比视觉刺激更强烈，它们显示出最长的进食延迟和最少的进食时间，以响应sparrowhawk的叫声。此外，与麻雀或家猫叫声相比，鹦鹉对进食的等待时间更短，对人类声音的进食时间更长。我们的结果表明，国内的鹦鹉可以通过视觉或听觉信号识别捕食风险，并相应地调整其摄食行为。
