Jan., 1909. Birds of Illinois and Wisconsin — Cory. 727 



Eggs, 3 to 6. Size, about .66 x .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 piisilla. 



Field Sparrow. 



Eggs, 4 to 5. Size, about .70 X .50; pale blue, sparingly marked 



with dark brown or bro-^rnish black. Bird, crown, bright rufous brown, 



a black streak through the eye. Spizella passerina. 



Chipping Sparrow. 



Eggs, 3 to 4. Size, about .70X.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.54; 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. Vircosylva gilva. 



Warbling Vireo. 



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



Eggs, 2 to 3. Size, about .75X.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 .So X .60; white, marked sparsely with 



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



wings showing white band. Lanivireo flavifrons. 



Yellow-throated Vireo. 



