ML482616231
作者
Scott Ray 该用户提供的媒体文件 档案
日期
地点
Hummingbird House - Stanley Home
Mountrail, North Dakota, 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
观察细节
This bird first appeared yesterday and was identified as Selasphorus sp. After sifting through hundreds of photos looking for some that might show any of the published clues used to separate the two nearly identical species, Rufous and Allen's Hummingbird, I am fairly confident that this is a Rufous. Many of the field marks are extremely subtle. Allen's trademark pin-shaped R5 feather only occur in the adult male. So being an imm bird adds to the identification difficulty. I believe it is an imm male. Separating the two species is all in the tail feathers, particularly their shapes. The slight dent in the lateral vein of R2 seems to be the only diagnostic indication of a Rufous instead of Allen's at this age.
技术信息
- 型号
- Canon EOS R5
- 镜头
- RF800mm F11 IS STM + EXTENDER RF1.4x
- ISO
- 20000
- 焦距
- 1120 mm
- 闪光
- Flash did not fire
- 光圈
- f/16.0
- 快门速度
- 1/800 sec
- 尺寸
- 3539 pixels x 2366 pixels
- 原始文件大小
- 2.72 MB