ML179587261
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; 没有鸟
媒体文件注释
Time 19:21 EDT continuing to enter chimney about 10 per second. The actual hole is very small in this chimney, so they all enter at the same point. This is the N&O retired chimney on 215 S McDowell Street, as seen from a parking garage on Salisbury south of Hargett.
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
- 800
- 焦距
- 71.4 mm
- 闪光
- Flash did not fire, auto
- 光圈
- f/6.2
- 快门速度
- 1/15 sec
- 尺寸
- 2048 pixels x 1536 pixels
- 原始文件大小
- 601.45 KB