JAN., 1909. BIRDS OF ILLINOIS AND WISCONSIN CORY. 727 



3 to 6. Size, about .66x.48; dull white, marked with light 

 brown. Bird, general plumage, yellow. Dendroica cestiva. 



Yellow Warbler. 



Eggs, 4 to 5. Size, about .69 x .50; dull white, marked with dark 

 slate brown. Bird, above bright greenish yellow; underparts, white, 

 outer tail feathers showing much white. Dendroica pensylvanica. 



Chestnut-sided Warbler. 



Eggs, 3 to 5. Size, about .70 x .51 ; pale bluish white, marked with 

 rufous brown. Bird, crown, brown, no blackish streak through eye. 



Spizella pusilla. 

 Field Sparrow. 



Eggs, 4 to 5. Size, about . 70x^0; pale blue, sparingly marked 

 with dark brown or brownish black. Bird, crown, bright rufous brown, 

 a black streak through the eye. Spizella passerina. 



Chipping Sparrow. 



Eggs, 3 to 4. Size, about _7ox.54; creamy white, marked with 

 dark brown. Bird, upper parts, dark olive; under parts, dusky white. 



Myiochanes virens. 

 Wood Pewee Flycatcher. 



Eggs, 2 to 3. Size, about . 73x^4; cream white or buff white, 

 sparingly marked with dark brown. Bird, upper parts, olive; throat, 

 whitish; belly, yellow. Empidonax virescens. 



Green-crested Flycatcher. 



Eggs, 3 or 4. Size, about .75 x .54; pure white, sparsely speckled 

 or marked with small dots of dark brown. Bird, upper parts, gray; 

 under parts, whitish; sides tinged with pale yellow. Vireosylva gilva. 



Warbling Vireo. 



PART 2. EGGS .75 OR MORE IN. LONG. 



Eggs, 2 to 3. Size, about .75 x.55; creamy white or buff white, 

 sparingly marked with dark brown. Bird, upper parts, olive; throat, 

 whitish; belly, yellow. Empidonax virescens. 



Green-crested Flycatcher. 



Eggs, 3 to 4. Size, about .75 x .55.; pure white, sparsely speckled 

 or marked with small dots of dark brown. Bird, upper parts, gray; 

 under parts, whitish; sides tinged with pale yellow. Vireosylva gilva. 



Warbling Vireo. 



Eggs, 3 to 5. Size, about . Sox. 58; bluish white or dull white, 

 scrawled and marked with dark brown and lilac-gray. Bird, entire 

 under parts, yellow. (Female.) Icterus spurius. 



Orchard Oriole. 



Eggs, 3 to 5. Size, about .80 x .60; white, more or less dotted or 

 scrawled with dark brown and pale gray brown. Bird, crown, chestnut, 

 with whitish stripe in middle ; cheek, chestnut ; black stripe on sides of 

 throat; throat and under parts, whitish. Chondestes grammacus. 



Lark Sparrow. Lark Finch. 



Eggs, 3 to 4. Size, about .80 x .60; white, marked sparsely with 

 dots of dark brown. Bird, throat and breast, yellow: belly, white; 

 wings showing white band. Lanivireo ftavifrons. 



Yellow-throated Vireo. 



