Warbler, the common name of the dentirostral birds of the family luscinidw or sylvicoUdcB, including many subfamilies and a great number of species. The bill is of moderate length, slender, broad at the base and tapering to the end; wings long, and tarsi long and slender; they are very sprightly, and small; many are exquisite singers, and some have a beautiful plumage. They are spread over all the habitable globe, and perform a very important part in the economy of nature in keeping down the number of minute insects which inhabit flowers, fruit, and foliage. In this family, according to Gray, belong the wagtails (motacillince), the titmice (parinoe), the erythacince (like the blue bird, and the old world robin, pratincole, and redstart),- the malurinw or soft-tailed warblers of the East Indies and Australia, and the sylmnm or luscinince, the typical warblers. The last seek for insects on trees and shrubs, eating also fruits and seeds; the nest is generally cup-shaped and neatly made, the eggs five to eight, and the broods two in a season.
This subfamily contains the nightingale, the kinglets, and the old world warblers like the black-capped syfoia. (See Blackcap.) Of the 40 warblers of North America, placed by Baird in the subfamily syhicolince, the names of some of the most common are: the prothonotary, mourning, blue-winged, yellow, golden-winged, orangecrowned, black-throated green, gray and blue (three), yellow-rumped, Blackburnian or hemlock, bay-breasted, pine-creeping, chestnutsided, blue, black poll, black and yellow, and prairie warbler.