ML134144511
- 年齡
- 未確定
- 性別
- 未確定
觀察細節
This is my first effort to distinguish Allen's from Rufous hummingbirds based on the tail feathers. I think this photo might be good enough to show the shape of the key tail feather, Rectrix #2 (second one out from the center, or the fourth one in from the outside--the first one without a white tip). R2 is notched in this tail shot--key feature for distinguishing Rufous from Allen's. Thanks to Don Roberson for pointing this out.
技術資訊
- 型號
- PENTAX K-r
- 鏡頭
- smc PENTAX-DA L 55-300mm F4-5.8 ED
- ISO
- 3200
- 焦距
- 300 mm
- 閃光
- Flash did not fire, auto
- 光圈值
- f/5.8
- 快門
- 1/200 sec
- 次方
- 1368 pixels x 909 pixels
- 原始檔案大小
- 114.3 KB