The tiniest bird in continental North America: the Calliope Hummingbird - a 3-1/4-inch jewel, weighing in at just a tenth of an ounce. These birds migrate north each spring from Western Mexico. From its perch, a male Calliope Hummingbird surveys its territory. This exquisite bird was named for the Greek muse of epic poetry, and it's the smallest long-distance avian migrant in the world. Learn more at BirdNote.org.