The person who gave the Nashville Warbler its name first saw one near Nashville, Tennessee. However, the bird was just passing through during its migration to nesting territory in the northeastern United States and southeastern Canada. There’s also a population that nests in the west coast states. Nashville Warblers build their nests on the ground, hiding them in the tall grass or among the ferns. During the winter, most of them are found in Mexico. You can just barely see the chestnut colored feathers on the top of this bird’s head; they are usually difficult to see in the field.