作者
Michael Park 该用户提供的媒体文件
日期
地点
Woodmont Ave Summit
Alameda, California, United States
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观察细节
UPDATE 12/07 -- Spectogram confirms type 2 flight calls Over Woodhaven area and Zaytuna College. Flock of about 10, loosely associated with a flock of Pine Siskin. Flocks separate with only a few siskins with crossbill flock. Seen and heard in flight. Did not appear to land nearby. Last seen flying north. Recordings made while observing flight. Initial impression in field, is of type 2 calls.
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- 1.01 MB