ML179587291
作者
LynnErla Beegle 该用户提供的媒体文件 档案
日期
地点
Chimney Swift Roost--Downtown Raleigh
Wake, North Carolina, United States
该地点产生的媒体文件 配图名录- 年龄
- 未说明
- 性别
- 未说明
- 行为
- 飞行
- 标签
- 生境
媒体文件注释
Time 19:16 EDT already started to enter chimney but just swirling in this photo
观察细节
Conservative estimate, based on counting 100x100 of swirling flock. The swifts entered the chimney at 215 South McDowell (News & Observer) from 7:14 until 7:30. About 10 per second entered the chimney over a period of 15 minutes. There were breaks in between where they were swirling, so another estimate was based on 500 birds entering the chimney per minute for a total of 7 active minutes. They started the entry at 7:14 and the last bird entered at 7:30.See photos.
技术信息
- 型号
- COOLPIX S7000
- ISO
- 280
- 焦距
- 11.1 mm
- 闪光
- Flash did not fire, auto
- 光圈
- f/4.4
- 快门速度
- 1/30 sec
- 尺寸
- 2048 pixels x 1536 pixels
- 原始文件大小
- 613.36 KB