- 性別與年齡
- 成鳥,性別未知 - 1
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觀察細節
According to Cornell's Birds of the World account for NOPO, this is the expected Subspecies group for the Sierras. Long, multi second gaps in the toot notes in the song are key. As opposed to the Mountain ssp which has notes that are much closer together, almost a 2 part vocalization like toot-toot.
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