- 年齡
- 未確定
- 性別
- 未確定
- 行為
- 飛行中
影音備註
Northern Rough-winged Swallow photographed in flight by Curtis A. Marantz on 16 December 2021 along the Whitewater River, north end Salton Sea, Riverside County, California.
觀察細節
Dean spotted this bird flying over the Johnson Street canal where it crossed under the levee road. I heard this bird call once, giving a sputtering "brrrt," but we saw it well. It was a relatively small swallow with a square-tipped tail and broad based wings that tapered to pointed tips. The upperparts were entirely a warm, dark brown and lacking contrast, but the underparts contrasted dingy brownish on the throat, breast, and sides with white on the belly and flanks/ This bird perched briefly atop a nearby snag, but it flew before I could get close enough to get a photo. I did manage to get a few photos of the bird in flight.
技術資訊
- 型號
- Canon EOS 7D Mark II
- 鏡頭
- EF100-400mm f/4.5-5.6L IS II USM
- ISO
- 500
- 焦距
- 400 mm
- 閃光
- Flash did not fire
- 光圈值
- f/6.3
- 快門
- 1/5000 sec
- 次方
- 939 pixels x 671 pixels
- 原始檔案大小
- 481.15 KB