报告

作者

日期

eBird记录 S287945277

地点

Magnolia Plantation & Gardens
Charleston, South Carolina, United States
该地点产生的媒体文件 配图名录
地图
地图 坐标: 32.8746855, -80.0863409
年龄
未说明
性别
未说明
发声
鸣叫
回放
未说明

媒体文件注释

Flicker call in normal time then followed by same call slowed to 0.092x found at 12.3 seconds.

观察细节

A polyphonic call made up of what appears to be three components beginning with component #1, a mostly monophonic whistle followed by #2, a shorter monophonic whistle at lower frequency. #3, a down slur at yet a lower frequency...all components seem to have their respective multiple integer harmonics. The image is of a Raven Lite spectrogram with the numbered components showing overlapping(polyphony). Audio #2 begins with call in real time followed by same call slowed to 0.092x to hear the individual components and temporal overlapping...an example of bird virtuosity.

技术信息

录音机
话筒
附件
原始文件大小
8.01 MB