Chestnut-collared Longspur - Nick Thorpe
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提供者

日期

地點

San Diego River mudflats & Robb Field
San Diego, California, United States
來自這個地點的影音 影音名錄
地圖
地圖 座標: 32.7569331, -117.2394124
年齡
未確定
性別
未確定

觀察細節

Very drab tan “longsparrow” with thin white eyering, darker malar, diffuse streaking on breast, more boldly streaked back. Not buffy like a Smith’s Longspur, facial pattern less defined, and too much white in tail. Bill smaller than Thick-billed Longspur, and too much streaking below. Lapland would show more of a chinstrap. Different shape/posture (shorter legs/ more crouched, and longer-winged) than a Vesper or Brewer’s sparrow, which could be confusion species. Also bears a passing resemblance to a female Cassin’s Finch, but bill is smaller and streaking below is much less defined. Bird was foraging on “center” field with pipits, here: (32.7541636, -117.2418056) After a few minutes of crouch-walking around, it flushed to the west with the pipits. White outer tail feathers seen in flight. Found this morning by Matt Sadowski.

技術資訊

型號
ILCE-7RM4A
鏡頭
FE 200-600mm F5.6-6.3 G OSS
ISO
200
焦距
600 mm
閃光
Flash did not fire
光圈值
f/6.3
快門
1/1000 sec
次方
1015 pixels x 676 pixels
原始檔案大小
342.78 KB