Phainopepla

At one point not far from the Verdin nest, I heard a repeating whistle like sound. It seemed nearby, but behind some small trees slightly off trail. I tried to find what was making the sound but it was just out of sight.
Then I found a less established trail that led behind the grove of small trees to another behind it. It was there that I got my fist glimpse of this Phainopepla, another bird like the Verdin that I had only a vague recollection of seeing in field guides.
I managed to get close enough to get this one descent photo, but I wish I'd have gotten one as it flew off as it had bright white patches on its wings that are not visible while at rest. A very striking bird.