- 性別與年齡
- 未成鳥,性別未知 - X
觀察細節
Apparent Hatch Year Brown-capped Rosy-Finch. Photos sent to Rosy-Finch Banders in New Mexico and confirmed as a Brown-capped. Record submitted to UBRC, however there was a split vote with some saying HY GCRF can look like this. To be fair, juvenile plumage GCRF can have a head pattern like this with no gray, but are overall darker with extensive buffy feather edging in the wings and tertials, however after completing their 1st post-juvenile molt into basic 1 plumage, they have a typical 1st winter GCRF head pattern with bright silver on at least the supercilium and in 10 years maintaining these feeders I have not seen another 1st winter Rosy-Finch with this dull of a head pattern at Alta, and according to BOW molt graph, juvenile GCRF should complete molt to Basic 1 no later than the 1st week of November and typically before migrating from nesting area. So, I stand by this observation as a BCRF 1st cycle Basic 1, probable female
技術資訊
- 型號
- Canon PowerShot SX50 HS
- ISO
- 80
- 焦距
- 116.2 mm
- 閃光
- Flash did not fire, auto
- 光圈值
- f/5.6
- 快門
- 1/640 sec
- 次方
- 4000 pixels x 2664 pixels
- 原始檔案大小
- 1.68 MB