ML20531911
- 性別與年齡
- 未成鳥,性別未知 - 1
觀察細節
whitish primary bases/feather shafts - moreso on underside of wing; light morph, juvenile; mostly brown bird; secondary coverts pale-tipped; basal 2/3 of bill grayish, darker tip; two central rectrices pointed and about 1 cm longer than the rest; noticably larger than BOGU; much smaller than HEGU; slightly larger than RBGU; seen frequently over 90 minute period in overcast skies; once flew 20 m over our heads; often sat on water for ~10 minutes at a time; chased other gulls; palish crescents above and below eyes; base of tail whitish - moreso than POJA; uppertail coverts barred brownish and whitish; nape slightly paler than mantle; lacked grayish tones of LTJA; first seen 19 Oct and again on 23 October - m.obs.
技術資訊
- 型號
- Canon EOS REBEL T5i
- 鏡頭
- EF-S55-250mm f/4-5.6 IS STM
- ISO
- 100
- 焦距
- 250 mm
- 閃光
- Flash did not fire, auto
- 光圈值
- f/7.1
- 快門
- 1/400 sec
- 次方
- 1398 pixels x 1233 pixels
- 原始檔案大小
- 131.62 KB