Like morphology, bird songs have no doubt the specific characteristics with significance in classification and field identification.

鸟声和鸟类的形态特征一样，具有物种的特异性，在鸟类分类和野外识别方面是有意义的。

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Bird songs and calls as one of the most important features, which contain abundant biological information, are vital for the research of Avi-behavior, bird population structure and classification.

鸟类的鸣声中包含有丰富的生物学信息，研究鸣声对于了解鸣声与行为的关系、鸟类的种群结构及种属分类具有重要的实际意义。

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