This is what is now known as a Yellow-rumped Warbler. At one time the eastern variant, the Myrtle and the western variant, the Audubon were classified as unique species but a few years ago the ornithological society that keeps track of and names or renames birds decided that they were just variations not unique species. This is the first time I have seen what used to be the Audubon but it no longer counts for a new bird, so we stay at 398. Still a much more colorful bird than its eastern cousin.