- 年齡
- 未確定
- 性別
- 未確定
- 回播
- 未確定
觀察細節
Identified from spectrogram using Irwin 2010, Figure 1. Call shows a steep down-sweep, followed by just as steep of an up-sweep and finishes with a slower down down-sweep. This is appears to be unique to flight call type 3. Sound filtered with high-pass filter at 200 Hz, otherwise unaltered. Birds were attending a feeder and visually IDed as Red Crossbill (mostly females type, a few red males) in attendance.
技術資訊
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- 麥克風
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