ML619648853
作者
Robert Hansen 该用户提供的媒体文件
日期
地点
Montrose Point Bird Sanctuary, Lincoln Park, Chicago
Cook, Illinois, 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 - 1
- 标签
- 生境
媒体文件注释
Gray underparts help to distinguish this species from Forster's Tern (which shows all white underparts).
观察细节
This adult bird was the only small Sterna tern standing on the beach with Caspian Terns. It was gray (rather than white like on Forster's Tern) below, its black-tipped bill was more red than orange, and it had a white tail with dark outer web of the outer rectices (rather than a gray tail with white outer webs of the outer rectrices like on Forster's Tern).
额外物种
技术信息
- 型号
- Canon PowerShot SX60 HS
- ISO
- 500
- 焦距
- 247 mm
- 闪光
- Flash did not fire
- 光圈
- f/6.5
- 快门速度
- 1/160 sec
- 尺寸
- 4608 pixels x 3456 pixels
- 原始文件大小
- 3.44 MB