Today I heard an odd song coming from the trees and bushes on the slope behind the fire station. It started out like an Orange-crowned Warbler, but quickly veered off into unfamiliar (to me) territory. I was able to get recordings of it, but was never able to get more the briefest of glimpses of a bird moving through the bushes. Given where and how it seemed to be moving, I’m reasonably confident it was a warbler of some sort, what I don’t know is whether it’s a common warbler with an unusual song, or an a-typical warbler with its normal song that I just don’t recognize.
(Recording notes: I removed a lot of lower frequency sounds to minimize the sound of the traffic that was going by.)