ML186202921
作者
David Drews 该用户提供的媒体文件 档案
日期
地点
Schlitz Audubon Nature Center
Milwaukee, Wisconsin, United States
该地点产生的媒体文件 配图名录- 年龄和性别
- 成鸟,性别未知 - 70
- 行为
- 飞行
- 标签
- 生境
观察细节
Flying southward in wave after wave. 14 were seen on the water, others in the air. Typical groups ranged from a low of 10-20, to many at 30-45, and several at 55-70. Estimated at least 1000 on site. Looking at photo sequence carefully, at least 1600 photographed over five minutes of a six minute sequence, after eliminating any apparent redundancies. Photographed in each minute from 10:59-12:05: 346, 224, 458, 374, 85, 0 (no photos), 170. I had seen several groups fly by before starting to photograph--too difficult to count at distance--so count is likely higher.
技术信息
- 型号
- NIKON D5200
- ISO
- 100
- 焦距
- 300 mm
- 闪光
- Flash did not fire
- 光圈
- f/5.6
- 快门速度
- 1/1600 sec
- 尺寸
- 6000 pixels x 1928 pixels
- 原始文件大小
- 7.1 MB