单语范例（未经PONS编辑处理）
英语
- Models often include human speech and bird song.en.wikipedia.org
- Every 15 minutes it sang a line in a very beautiful realistic bird song.en.wikipedia.org
- Bird song is an example of learnt territorial defense.en.wikipedia.org
- He claimed to have incorporated bird song into some of his improvisational music.en.wikipedia.org
- This is a potential example of the formation of a dialect in bird song.en.wikipedia.org
- He was also the first to use musical annotation to describe bird song.en.wikipedia.org
- Bird song is an integral part of bird courtship and is a pre-zygotic isolation mechanism involved in the process of speciation.en.wikipedia.org
- He speculated that its language would have sounded somewhat like bird song.en.wikipedia.org
- Strong evidence already exists for mate choice, bird song, predator recognition, and foraging.en.wikipedia.org
- For more information on bird song, see bird vocalization.en.wikipedia.org
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