Various Passerine (perching birds) are Common name referred to as warblers. They are not necessarily closely related to one another, but share some characteristics, such as being fairly small, vocal, and insectivore.
Sylvioid warblers
These are somewhat more closely related to each other than to other warblers. They belong to a
Taxonomic rank also containing Old World babblers,
, etc.
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"Old World warblers", formerly all in the family Sylviidae:
Passeroid warblers
The two families of
Americas warblers are part of another superfamily, which unites them with New World sparrows,
Emberizidae,
, etc.
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"New World warblers", formerly all in the family Parulidae:
Others
These are closely related to the tits and chickadees
These are the most distinct group of warblers. They are not closely related at all to the others, but rather to the
and
Malurus.
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Wilson, Eisner, Briggs, Dickerson, Metzenberg, O'Brien, Susman, & Boggs. Life on Earth, Edward O. Wilson, Thomas Eisner, Winslow R. Briggs, Richard E. Dickerson, Robert L. Metzenberg, Richard D. O'Brien, Millard Susman, William E. Boggs, c 1973, Sinauer Associates, Inc., Publisher, Stamford, Connecticut. (hardcover, )
