Parulidae

The New World warblers, family Parulidae, are a group of small, often colorful passerine birds restricted to the Americas and not closely related to the Old World or Australian warblers. The family contains 120 species in 18 genera, most of them tree-dwelling insectivores, though some, such as the ovenbirds, live on the ground. The family appears to have originated in northern Central America, where species diversity is greatest, with many species spreading north as seasonal migrants during interglacial periods and two genera colonizing South America early enough to account for most of the warbler species found on that continent.