Jax., 1909. Birds of Illinois and Wisconsin — Cory. 731 



SECTION 2. NEST IN HOLE IX TREE, STUMP OR 



POST. 



Eggs, 5 to 8. Size, about .60 x .48 ; white, speckled with pale brown. 



Penthestcs atricapilliis. 



Chickadee. 



Eggs, 6 to 8. Size, about .64 x .49: vinaceous, speckled with pale 



brown. Troglodytes aedon (or parknianii) . 



House Wren. 



SECTION 3. NEST ABOUT DWELLINGS AND BARNS. 



Eggs, 6 to 8. Size, about .64X.49; vinaceous, speckled with pale 

 brown. Troglodytes aedon (or parkfnanii) . 



House Wren. 



Eggs, 2. Size, about 1.20X.S5; pale olive buff or grayish white, 



thickly speckled (usually marked) with brown and washed in places 



with pale purplish gray. Location, eggs sometimes deposited on roof 



of house, usually in a field. Chordeiles virgitiianns. 



Nighthawk. 



SECTION 4. NEST IN OPEN FIELDS ON GROUND OR 

 IN BUNCH OF GRASS. 



PART I. EGGS LESS THAN i IN. LONG. 



Eggs, 3 to 5. Size, about .85X.62; pale olive or dull whitish, 

 thickly speckled and marked with pale brownish olive. 



Otocoris alpcstris praticola. 

 Prairie Horned Lark. 

 Eggs, usually i or 2. Size, about .87 x .66; deposited in some other 

 bird's nest. Color, white or pale bufT, speckled with brown. 



Molothrns ater. 

 Cowbird. 



PART 2. EGGS FROM i TO 1.50 IN. LONG. 



Eggs, 2. Size, about 1.19X.86; pale olive buff or grayish white, 

 thickly dotted and speckled with brown, and washed in places with pale 

 purplish gray. Location, eggs deposited on a rock or on the ground, 

 sometimes on fiat roofs of houses. Chordeiles virginianiis. 



Nighthawk. 



