The Black-and-white Warbler (Mniotilta varia) is a species of New World warbler, the only member of its genus, Mniotilta. It breeds in northern and eastern North America from the Northwest Territory and Newfoundland and Labrador, Canada to Florida. This species is migratory, wintering in Florida, Central America and the West Indies down to Peru. This species is a very rare vagrant to western Europe.
This species is 14 cm (6 in) long and weighs 11 g (0.39 oz). The summer male Black-and-white Warbler is boldly streaked in black and white, and the bird has been described as a flying humbug. There are two white wing bars. Female and juvenile plumages are similar, but duller and less streaked.
The breeding habitat is broadleaved or mixed woodland, preferably in wetter areas. Black-and-white Warblers nest on the ground, laying 4–5 eggs in a cup nest.
- BirdLife International (2012). "Mniotilta varia". IUCN Red List of Threatened Species. Version 2013.2. International Union for Conservation of Nature. Retrieved 26 November 2013.
- Curson, Jon; Quinn, David; Beadle, David (1994). New World Warblers. London: Christopher Helm. pp. 158–159. ISBN 0-7136-3932-6.
- Sibley, David Allen (2000). The Sibley Guide to Birds. New York: Alfred A. Knopf. p. 446. ISBN 978-0-679-45122-8.
- Stiles and Skutch, A guide to the birds of Costa Rica ISBN 0-8014-9600-4
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- Black-and-white Warbler – Mniotilta varia – USGS Patuxent Bird Identification InfoCenter
- Black-and-white Warbler Species Account – Cornell Lab of Ornithology
- Stamps at bird-stamps.org
- Black-and-white Warbler Bird Sound at Florida Museum of Natural History
- Black-and-white Warbler videos, photos, and sounds at the Internet Bird Collection
- Black-and-white Warbler photo gallery at VIREO (Drexel University)