ML49438661
- 年齡
- 未確定
- 性別
- 未確定
- 回播
- 未使用回播
影音備註
Record recording - WSOW are rare here. Bird was heard vocalizing from Douglas-fir/Lodgepole Pine/Trembling Aspen woods at edge of townsite.
觀察細節
Recording: http://www.xeno-canto.org/253190 Heard only; was heard spontaneously vocalizing from Douglas-fir/Lodgepole Pine/Trembling Aspen woods at edge of Waterton townsite. Weather was clear with light winds. I heard it for ~1 minute, and I managed to get the recording linked above, but heard nothing more from it despite spending the next 30 mins walking around the vicinity. It was heard giving the classic Western Screech-Owl "bouncing-ball" song - a series of notes accelerating in pace towards the end. I heard no other sounds from it. I'm familiar with the species, having heard multiple individuals in B.C. Similar species: I believe that the increasing tempo (more closely-spaced notes) towards the end of each song phrase rules out Boreal Owl. Also, this bird didn't show an increase in pitch of the notes during a song phrase, which Boreal Owl often shows (with Boreal somewhat resembling Wilson's Snipe winnowing in this regard). The song phrases also appeared shorter than an average Boreal Owl song.
技術資訊
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- 1012.19 KB