- Setophaga coronata
Includes: Myrtle Warbler; Audubon's Warbler; West Mexico Warbler; Goldman's Warbler
14–15 cm (5½-6 in)
Yellow patches on rump and sides unique but those on the sides occasionally lacking.
Females are more brownish and in the Audubon's form may have whitish or buff throat.
Outside of breeding plumage, both sexes become duller but usually still show yellow rump and side patches.
Birds of subspecies nigrifrons (West Mexico Warbler) are large and have dark mantle, while Goldman's Warbler (goldmani) are large and have black mantle.
Breeding males of the Myrtle form and the form sometimes called Audubon's Warbler both have grey mantle with black stripes.
The Myrtle form has white throat and black on side of head mostly surrounded by white below the grey crown, while Audubon's have yellow throat, reduced white markings and less contrast between ear-coverts and crown.
Both forms have white wing bars but more extensive white feather edges in the Audubon's form. The Audubon's form become blacker in the southern parts of its range.
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.
Casual vagrant to Great Britain (22 records).
Formerly placed in genus Dendroica. The eastern (Myrtle) and western (Audubon's) races of this species were once considered separate species. Some authorities still do.
There are 4 subspecies2
- Group "Myrtle Warbler"
- Group "Audubon's Warbler"
- Group "West Mexico Warbler" (or sometimes called "Black-fronted Warbler")
- S. c. nigrifrons:
- Sierra Madre Occidental of western Mexico (Chihuahua to Durango)
- Group "Goldman's Warbler"
- Formerly subspecies S. c. memorabilis now lumped with auduboni;
- Former subspecies S. c. hooveri now lumped with coronata
Coniferous and mixed forests also winters in open area.
Diet mostly insectivorous but will eat berries and other vegetation. Audubon's group eat some fruit in the winter months.
Nest is a bulky cup of twigs, grasses and moss, lined with hair and feathers usually in a tree but sometimes on the ground. Clutch of 3–5 eggs, usually four. Nests fequently parasitized by Brown-headed Cowbird
Song a variable and loosely structured rather slow, flat trill, often sounding two-parted and usually rising (but occasionally falling) at end.Usual call a sharp, emphatic “chup” or “chek”; flight call a soft, clear, high-pitched “sip” or “tsee”. Calls differ between subspecies groups.
This species is a largely "facultative migrant" responding to changing food supplies. Otherwise short-distance to long-distance migrant, and in autumn moves later than do most other parulids. Race S. c. goldmani.
Click on photo for larger image
- Dunn, Jon; Garrett, Kimball. 1997. A Field Guide to Warblers of North America. Boston: Houghton Mifflin Company. ISBN 9780395783214
- Clements, J. F., T. S. Schulenberg, M. J. Iliff, S. M. Billerman, T. A. Fredericks, B. L. Sullivan, and C. L. Wood. 2019. The eBird/Clements Checklist of Birds of the World: v2019. Downloaded from http://www.birds.cornell.edu/clementschecklist/download/
- Birdforum thread discussing the taxonomy of Yellow-rumped Warbler
- Hunt, P. D. and D. J. Flaspohler (2020). Yellow-rumped Warbler (Setophaga coronata), version 1.0. In Birds of the World (P. G. Rodewald, Editor). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.yerwar.01
- Curson, J., Marks, J.S. & Kirwan, G.M. (2020). Myrtle Warbler (Setophaga coronata). In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. (retrieved from https://www.hbw.com/node/61471 on 16 April 2020).
- del Hoyo, J., Collar, N., Marks, J.S. & Kirwan, G.M. (2020). Audubon's Warbler (Setophaga auduboni). In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. (retrieved from https://www.hbw.com/node/1344159 on 16 April 2020).
- BirdForum Opus contributors. (2021) Yellow-rumped Warbler. In: BirdForum, the forum for wild birds and birding. Retrieved 18 June 2021 from https://www.birdforum.net/wiki/Yellow-rumped_Warbler