The Myrtle Warbler is also known by several other names, including Yellow-rumped Warbler, Audubon's Warbler and Butter-butt. This small, colorful bird is a common sight in North America during the winter months, when it migrates to warmer regions. In addition to its distinctive yellow rump, the Myrtle Warbler is also easily identified by its black mask and white eye stripe. Its range extends from coast to coast, with populations found in forests, grasslands and along the shoreline. Regardless of what name you know it by, the Myrtle Warbler is a beloved bird among birdwatchers and nature enthusiasts alike.