Tweeters:

Along the "I know that song, but it's been too long since last year" theme,
any suggestions what bird was the cause of the following:

A "breeep," in a small grove of fir, fairly high up, repeating every
second or so, occasionally no pause, occasionally two- or three-second pause,
loud, similar to flicker but longer, less harsh and more tone, pitch ever so
slightly rising in middle, end falling but not quite as low as at beginning,
continued for at least five minutes, in residential Burien. It really was
frustrating not being able to see that thing.

Eric Stahlfeld