Acadia National Park

Description  SPRING MALE "Myrtle" has dark gray upperparts, streaked on back, with two white wing bars and yellow crown stripe. Throat is white and has narrow white supercilium. Breast is blackish and underparts are white with dark streaks and yellow flank patch. "Audubon's" is similar, but has yellow throat and white wing patch. SPRING FEMALE Similar to respective male, but paler, with indistinct crown patch. FALL ADULT Duller than spring counterpart. IMMATURE Recalls dull, buffish fall female without crown patch; note yellow rump and flank patch, and white wing bars. "Myrtle" has white throat and narrow supercilium; "Audubon's" has buff throat.

Dimensions  Length: 5-6" (13-15 cm)

Habitat  Common summer visitor (mainly May-Aug) to a variety of mixed woods and open, brushy areas, as well as coniferous forests. Winters in southern U.S. and Central America.

Observation Tips  Hard to miss.

Range  Rocky Mountains, Northwest, California, Florida, Mid-Atlantic, Texas, Western Canada, Alaska, Eastern Canada, Southwest, Plains, New England, Southeast, Great Lakes

Voice  Song is a trilling series of whistles; call is a soft chep.

Discussion  Widespread wood-warbler. Plumage varies across range: "Myrtle Warbler" occurs in north and east and is described below unless otherwise stated; western "Audubon's Warbler" occurs mostly outside range of this book. Yellow rump and yellow flank patch are seen in all birds. Sexes are dissimilar.