Male blue monkeys alarm call in response to danger experienced by others.

@article{Papworth2008MaleBM,
  title={Male blue monkeys alarm call in response to danger experienced by others.},
  author={Sarah Papworth and Anne-Sophie B{\"o}se and Jessica Barker and Anne Marijke Schel and Klaus Zuberb{\"u}hler},
  journal={Biology letters},
  year={2008},
  volume={4 5},
  pages={472-5}
}
Male blue monkeys (Cercopithecus mitis stuhlmanni) of Budongo Forest, Uganda, produce two acoustically distinct alarm calls: hacks to crowned eagles (Stephanoaetus coronatus) and pyows to leopards (Panthera pardus) and a range of other disturbances. In playback experiments, males responded to leopard growls exclusively with a series of pyows and to eagle… CONTINUE READING