Previous research has shown that humans can discriminate two individual rhesus monkeys (Macaca mulatta), as well as two individual zebra finches (Taeniopygia guttata) by their vocalizations. The discrimination of individual zebra finches largely relies on differences in pitch contour, although this is not the only relevant cue. The purpose of the present experiment was to examine whether humans can also discriminate two individual large-billed crows (Corvus macrorhynchos) by their calls. Discrimination was tested with a forced-choice Same-Different Paradigm. Results show a high discrimination accuracy without prior training, although the scores obtained here were lower than those in the zebra finch discrimination task. There was no significant learning trend across trials. Future studies should investigate which acoustic cues participants use for the discrimination of individual crows and expand these findings with more non-human animal vocalizations.

中文翻译：

---

人类通过电话区分大嘴乌鸦

以前的研究表明，人类可以通过发声来区分两只恒河猴（猕猴）和两只斑马雀（Taeniopygia guttata）。个别斑马雀的辨别很大程度上取决于音高轮廓的差异，尽管这不是唯一相关的提示。本实验的目的是检验人类是否也可以通过区分两个大嘴乌鸦（Corvus macrorhynchos）。歧视是通过强制选择相同差异范式进行的。结果显示，在没有事先训练的情况下，判别准确性很高，尽管此处获得的分数低于斑马雀科判别任务中的分数。整个试验中没有明显的学习趋势。