Possible American Tree Sparrow
Hi all. An interesting recording was obtained today that has some potential of being an American Tree Sparrow. It may be impossible to verify that it is one because they have a wide variety of calls, all of which are reported to be highly variable, so lots of caveats apply. The recording was obtained at the Maple Canyon Trail head, roughly here: 32.7370765, -117.1617973, which is about a mile west of where Justyn and Nicole found theirs.
I just wanted to get the word out in case anyone who lives nearby or happens to be in the area gets a chance to go by there to check it out.