Bird song is socially learned. During song learning, the bird’s hearing its own vocalization is important for normal development of song. Whether bird’s own song is represented and recognized as a special category in adult birds, however, is unclear. If birds respond differently to their own songs when these are played back to them, this would be evidence for auditory self-recognition. To test this possibility, we presented song sparrow males (Melospiza melodia) playbacks of their own songs or stranger songs and measured aggressive responses as well as type matching. We find no evidence of behavioral discrimination of bird’s own song relative to the (non-matching) stranger song. These findings cast doubt on an earlier proposal that song sparrows display auditory self-recognition and support the common assumption in playback experiments that bird’s own song is perceived as stranger song.

中文翻译：

---

麻雀不会区别自己的歌曲和陌生的歌曲

鸟歌是社会学的。在歌曲学习过程中，鸟儿听到自己的声音对于歌曲的正常发育很重要。但是，尚不清楚鸟儿自己的歌声是否在成年鸟儿中得到体现和认可。如果鸟类在播放歌曲时对自己的歌曲做出不同的反应，这将成为听觉自我识别的证据。为了测试这种可能性，我们介绍了麻雀男（Melospiza melodia）播放他们自己的歌曲或陌生人的歌曲，并测量激进的反应以及类型匹配。我们没有发现相对于（不匹配的）陌生歌曲，鸟类自己的歌曲有行为歧视的证据。这些发现使人们对早期的提议提出了怀疑，即歌曲麻雀具有听觉上的自我识别能力，并支持回放实验中的普遍假设，即鸟类自己的歌曲被视为陌生歌曲。