ML43835451
- 年齡
- 未確定
- 性別
- 未確定
觀察細節
Glanced out my window and saw a small thrush foraging in my yard. Went outside and it was still there. Observed for six minutes before it flew away (two agitated robins didn't seem to like it hanging around), attempted to relocate but could not find it again. Monotone-colored back and lack of rufous color anywhere ruled out veery, hermit, and wood. Swainson's thrush ruled out due to lack of spectacles and no response to recording of Swainson's call or song. That narrowed it down to a Gray-cheeked/Bicknell's. Did not react to either Bicknell's song or call but significant response to Gray-cheeked song and call. Responded by looking at me and moving closer, heard brief vocalization in response. Repeated plays elicited similar reactions, but repeated Bicknell's playbacks saw no response. Yellow on lower mandible did not extend far at all, less than halfway. Primaries extended further from tertials than a Bicknell's would. Tail not slightly lighter than rest of body like Bicknell's is often. All these, especially the strong response to the Gray-Cheeked recordings and lack of response to the Bicknell's recordings suggest a Gray-cheeked thrush.
技術資訊
- 型號
- NIKON D7100
- ISO
- 800
- 焦距
- 200 mm
- 閃光
- Flash did not fire, auto
- 光圈值
- f/4.0
- 快門
- 1/250 sec
- 次方
- 1477 pixels x 985 pixels
- 原始檔案大小
- 797.3 KB