ML618132937
作者
日期
地点
- 年龄
- 未说明
- 性别
- 未说明
观察细节
Chaetura Swift flying with a flock of VGSW and quite low at times. Stiff winged flight with quick beats when it was not gliding. Proportions appear correct for Vaux's over Chimney with relatively shorter tail, close to being uniformly more pale underneath, and photo shows paler rump. Jeff S. was able to see 2 swifts this evening. I only noticed one at the time, although photos potentially show different individuals with a slight variation in paleness of the rump. Also I quickly focused on getting photos for documentation so tracked the individual in camera. Color of rump appears consistent with color of throat, upper breast and being darker than wings back. The out of focus image shows a clearly lighter rump than rest of upper body. April sighting may also point in favor of VASW over CHSW which seem to appear more often in May for spring migrants. Apparent county first and northernmost record for New Mexico (eBird).
技术信息
- 型号
- NIKON D850
- 镜头
- 500.0 mm f/5.6
- ISO
- 560
- 焦距
- 500 mm
- 闪光
- Flash did not fire
- 光圈
- f/7.1
- 快门速度
- 1/2500 sec
- 尺寸
- 1212 pixels x 808 pixels
- 原始文件大小
- 631.45 KB