ML78241071
作者
日期
地点
- 年龄和性别
- 成鸟,性别未知 - X
- 标签
- 多个鸟种
观察细节
The photos (attached) of the bird at rest exhibit the following features (per Olsen and Larsson 2004) consistent with adult Slaty-backed Gull: • slaty-grey mantle, not as dark as that of GBBG; • marginally larger than nearby HERG; • stocky - deep-bodied, thick-necked, relatively short-winged; • fairly straight yellow bill with minimal gonys angle, red gonydeal spot; • dark streaking on upper breast, neck and head; • pale eyes, bright pink legs; • conspicuous white mirrors decreasing in size from P6-P10; • broad white scapular and tertial crescents connecting to narrow white secondary tips. Notably, Kirk Zufelt documented a SBGU at the nearby SSM landfill on Jan 12, 2012, two months later. Photos on Kirk's blog here: http://larusology.blogspot.ca/2012/01/slaty-backed-gull-sault-ste-marie.html. Same bird? Dec. 18/2017: Report submitted to the OBRC.
技术信息
- 型号
- Canon PowerShot SX20 IS
- ISO
- 320
- 焦距
- 100 mm
- 闪光
- Flash did not fire, auto
- 光圈
- f/5.7
- 快门速度
- 1/320 sec
- 尺寸
- 4000 pixels x 3000 pixels
- 原始文件大小
- 1.76 MB