- Setophaga coronata
Includes: Myrtle Warbler; Audubon's Warbler; West Mexico Warbler; Goldman's Warbler
Yellow patches on sides unique but occasionally lacking. Birds of subspecies nigrifrons (West Mexico Warbler) are large and have dark mantle, Goldman's Warbler (goldmani) are large and have black mantle, while Audubon's Warbler are smaller and have grey mantle.
North America's most common warbler. Breeds from Alaska east to northern Quebec (absent only in arctic region) south across most of the western United States; northern Minnesota and Michigan; New York; western Pennsylvania, and New England; also along the Appalachians south to West Virginia.
Found anywhere in North America in migration. Winters in southern United States, along the west coast north to Washington, and in Central America. Rare in northern South America.
Casual vagrant to Great Britain (22 records).
Formerly placed in genus Dendroica.
There are 6 subspecies1
The eastern (Myrtle) and western (Audubon's) races of this species were once considered separate species. New results indicate that this topic probably will be assessed again soon, and if so, each of the four groups may become full species.
- Group "Audubon's Warbler"
- S. c. auduboni - breeds along the Pacific Slope region
- S. c. memorabilis - breeds from south-eastern British Columbia south (east of the Cascades and Sierra Nevada) to Arizona, New Mexico and western Texas (this form sometimes lumped with auduboni)
- S. c. coronata - breeds from north-central Alberta across Canada to the eastern United States
- S. c. hooveri - breeds from Alaska, northern Yukon, and north-western Mackenzie south to northern British Columbia (this form sometimes lumped with coronata)
Photo by Tom Jenner
Cordillera de los Cuchumatanes in western Guatemala
, April 2006.
- Group "West Mexico Warbler" (or sometimes called "Black-fronted Warbler")
- S. c. nigrifrons - breeds Chihuahua and Durango mountains in western Mexico.
- Group "Goldman's Warbler"
- S. c. goldmani - breeds south-eastern Chiapas (rare) and Guatemala
Coniferous and mixed forests also winters in open area
Diet mostly insectivorous but will eat berries and other vegetation.
- Dunn, Jon; Garrett, Kimball. 1997. A Field Guide to Warblers of North America. Boston: Houghton Mifflin Company. ISBN 9780395783214
- Clements, JF. 2011. The Clements Checklist of Birds of the World. 6th ed., with updates to August 2011. Ithaca: Cornell Univ. Press. ISBN 978-0801445019. Spreadsheet available at http://www.birds.cornell.edu/clementschecklist/downloadable-clements-checklist
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