Red Crossbill (Ponderosa Pine or type 2) - Daniel Errichetti
報告

提供者

日期

eBird 紀錄清單 S286349610

地點

Lantern Hill--Narragansett Trail
New London, Connecticut, United States
來自這個地點的影音 影音名錄
地圖
地圖 座標: 41.4654168, -71.9469525
年齡
未確定
性別
未確定

觀察細節

Rare in CT. One called among the rest, which I presume to be type 12. Lower choowp-choowp call that is entirely descending. Call notes below 4.5kHz and over 0.04 sec. I think the spectrogram fits the 'kinked' (down-up-down) call variation of this type, which apparently is rarer for the East as the 'unkinked' (entirely descending) variation is the more commonly encountered.

技術資訊

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