I have added the comparison with Black Oystercatcher to my Flickr Account.
All 3 candidates, Wrentit, Song Sparrow (seen at the location and time) and
Black Oystercatcher have similar rising/falling calls at 3 kHertz but only
Song Sparrow seems to have the correct cadence.

https://www.freelists.org/post/obol/North-Jetty-Wrentit-Seat-of-the-Pants-Analysis
The latter url does not include the Black Oystercatcher calls but they are
on Flickr.
Bob OBrien Portland

---------- Forwarded message ---------
From: Robert O'Brien <baro at pdx.edu>
Date: Mon, Jan 30, 2023 at 9:26 PM
Subject: North Jetty Sound Recording: Seat of the Pants Analysis
To: tweeters <tweeters at u.washington.edu>


I submitted this to Tweeters but it was rejected as too large.(i.e.
Long-Winded!)
It is also available on OBOL which is not so discriminatory. Scroll down.
https://www.freelists.org/post/obol/North-Jetty-Wrentit-Seat-of-the-Pants-Analysis
Bob OBrien Portland