Parula Bonaparte, 1838 Dendroica G. R. Gray, 1842 Setophaga is a genus of birds of the New World warbler family Parulidae.
Most Setophaga species are long-range migrants, wintering in or near the New World tropics and seasonally migrating to breed in North America.
[3] The type species was subsequently designated by Swainson in the same year as the American redstart Setophaga ruticilla.
[11] This time frame roughly corresponds to the transition from the Miocene to the Pliocene period, when an abrupt rise in temperature and the fragmentation of forest habitats in North America[12] may have caused allopatric speciation in the genus.
Since these species are strikingly similar in both diet and morphology, this was once thought to be a violation of the laws of evolution.