The American redstart is a smallish warbler. Hooded warbler and American redstart are common nesters in the forest under story. The rarely seen ovenbird and American redstart make their home in the deciduous forest. For example, in American redstart, individuals with better phenotypic qualities arrive and mate first. The American redstart ("Setophaga ruticilla") is a New World warbler. The only member of the genus "Setophaga" prior to the merger was the American redstart. In North America, the smallest known bird prey is the American redstart ("Setophaga ruticilla").