So, to my mystery song query below, some have suggested white-throated sparrow
or yellow-throated warbler (out of range here, and thus unfamiliar to many
here), but most had the same conclusion I had, which is a prairie warbler, in
particular this fellow:
https://www.facebook.com/photo.php?fbid
Lindsay-Parsons seems to harbor a lot of strange singers.
During the Spring Bird Quest on Saturday, May 27, I recorded the following
"ascending song", which starts around the 5-second mark in this clip:
http://suan-yong.com/sound/lindsay-parsons-2017-05-27.wav
What do you think it is? This was
Visitors to Lindsay Parsons this year may have heard a strange trill from
the first field, coming from the trees in the east. Our SFO group had heard
this on May 5, during which I said it was probably an odd junco song. This
morning's CBC field trip heard the song again. Here's an iPhone recording:
