High frequency components in avian vocalizations

鸟类鸣声中的高频成分分析(英文)

Ultrasonic communication in vertebrates is attracting increasing research interest.To determine if ultrasonic vocalization is common in birds,we recorded their vocalizations with ultrasound detectors in the Dongzhai National Nature Reserve of Henan Province,China.We found varying degrees of high frequency components in the vocalizations of 14 species and in several of these species,the frequency of harmonics was up to the range of ultrasound.We suggest that more studies are required to determine whether the high frequency components in avian vocalizations have functions and what these functions are.In addition,the ability of birds to hear sounds in the high frequency range also requires re-examination.

脊椎动物的超声通讯引起了越来越多的研究人员的兴趣。为了确定鸟类中是否普遍存在超声发声的现象,我们在河南董寨国家级自然保护区采用超声探测仪记录了14种鸟类的鸣声,发现每种鸟类的鸣声中都存在不同程度的高频的成分,并且其中几种鸟类的高频谐波达到了超声的范围。我们建议进行更多的研究来考察鸟类鸣声中的高频成分是否具有功能以及其具体的功能有哪些。另外,鸟类的听力范围也需要重新来检测。