ML617115652
Greater/Lesser Scaup Aythya marila/affinis
作者
Mary Russ 该用户提供的媒体文件 档案
日期
地点
Champlain Bridge / Chimney Point
Addison, Vermont, United States
该地点产生的媒体文件 配图名录- 年龄
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- 性别
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观察细节
We counted the scaups using a scope set-up on the south side of the parking area under the bridge. The raft extended the entire length of Rte 125 toward the VFWD access downstream. Siler estimated 2000 birds and asked me to double-check. So I counted the raft edges by 10s, then the denser middle part of the raft by 100s. I counted more than 3000, but rounded down to be safe. When we left, we drove along Rte 125 and pulled over to confirm the ID from a shorter distance. Siler took a few pictures of the raft, which we included - the pictures don’t capture the whole raft though.
技术信息
- 型号
- COOLPIX P950
- ISO
- 125
- 焦距
- 357 mm
- 闪光
- Flash did not fire
- 光圈
- f/6.5
- 快门速度
- 1/250 sec
- 尺寸
- 4594 pixels x 1442 pixels
- 原始文件大小
- 1.08 MB