650 FIELD MUSEUM OF NATURAL HISTORY ZOOLOGY, VOL. IX. 



Adult female: Dark greenish olive above; tail feathers, dark fus- 

 cous brown, generally faintly edged with grayish blue; under parts 

 dull buffy white. 



Diagnostic character in any plumage: Exposed white spot on pri- 

 maries at end of coverts. 



Length, 5.20; wing, 2.50; tail, 2; bill, .35. 



This species is a common migrant in Illinois and Wisconsin in 

 spring and fall, and undoubtedly breeds in northern Wisconsin, as 

 Mr. John F. Ferry observed a bird of this species feeding young 

 (which were taken) near Woodruff, Vilas County, July 2, 1908, and 

 Messrs. Kumlien and Hollister say : " There are several records of sum- 

 mer specimens from different localities." 



313. Dendroica coronata (LINN.). 



MYRTLE WARBLER. YELLOW-RUMPED WARBLER. 



Distr.: Whole of North America, but much more common east 

 of the Rocky Mountains ; breeds from northern New York and north- 

 ern Michigan and in the Alleghany Mountains north to Ungava and 

 Alaska; winters in the West Indies and Central America. 



Adult male in spring: Upper plumage, bluish gray, streaked with 

 black; crown, sides of breast and rump, clear yellow; throat, white; 

 a white superciliary line; sides of head, 

 black; breast, white, streaked with 

 black; sides, the same; wings and tail 

 dark fuscous, the latter with white 

 blotches. 



Adult female in spring: Similar, but 

 browner above and with but little black 

 on under parts; yellow patches duller 

 and smaller. 



Adult in fall and immature: Yellow 

 on crown more or less concealed; upper parts, grayish brown, 

 streaked with black or dusky. 



Diagnostic characters in any plumage: Crown, sides of breast and 

 rump more or less yellow; throat, white or whitish. 

 Length, about 5.50; wing, 2.95; tail, 2.30; bill, .36. 

 The yellow patches on the rump and sides of the breast are 

 usually sufficiently noticeable to identify this species in the field. 



The Myrtle Warbler is an abundant migrant in spring and fall in 

 Illinois and Wisconsin. Although the eggs have not been taken 

 within our limits, it may breed in northern Wisconsin. Mr. F. H. 



