报告

作者

日期

eBird记录 S105155175

地点

Patterson Pass
Alameda, California, United States
该地点产生的媒体文件 配图名录
地图
地图 坐标: 37.690947, -121.593378
年龄
未说明
性别
未说明
回放
未说明

媒体文件注释

Lots of them on a wire

观察细节

Probably more than a 150. See the two photos of the groups, one group was on the electrical wires and another on the fences and I counted approximately 150 birds total, there were more of them in the field between the two groups. On one of the recordings, there must have been 30 birds on a wire making this cat like hissing vocalizations. After a while they calmed down, nearly no sound can be heard on the recording, Then another flock of 60 birds at least descended on the wire and their vocalizations restarted, as if they were rearranging themselves on the wire and producing these sounds to make themselves heard by others.

技术信息

录音机
话筒
附件
原始文件大小
1.39 MB