English: :Amplified and used high pass filter. Habitat was where the redwood trees met a small clearing with dried grass. Every 2-3 seconds there is a single note that keeps getting repeated; a "chiip" kind of call. I think there are other background birds making calls, but I am not sure what kind they were.
bird-seen:no
playback-used:no
Common name: Identity unknown
Type: call
Genus: Mystery
Species: mystery
Location: San Francisco Peninsula (near Redwood City), San Mateo County, California
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