JAN., 1909. BIRDS OF ILLINOIS AND WISCONSIN CORY. 725 



SECTION 5. NEST IN SWAMPY PLACES IN REEDS OR 

 GRASS, OX GROUND OR ON FLOATING VEGETATION. 



Eggs, 3 to 6. Size, about 1.20 x .92. Color, very pale blue or blu- 

 ish white. Nest in reeds or small bushes in swamp or pond. 



Ixobrychus exilis. 

 Least Bittern. 



Eggs, 4 to 6. Size, about 2 x 1.46. Color, pale greenish blue. 

 Size will distinguish them from preceding species. 



Nycticorax nycticorax ncevius. 

 Black-crowned Night Heron. 



GROUP 3. EGGS NOT WHITE OR BLUE 

 (UNMARKED). 



SECTION i. XEST ON BRANCHES OF TREES OR 



BUSHES. 



Eggs, 3 to 6. Size, about i.i6x.82; occasionally pale bluish or 

 brownish without marking, but usually pale bluish or greenish marked 

 and scrawled with dark brown or black. 



Quiscalus quiscula ceneus. 



Bronzed Grackle. 



SECTION 2. NEST IN HOLE IN TREE, STUMP OR POST. 



Eggs, 6 to 8. Size, about .64 x .49; occasionally pale vinaceous or 

 pinkish without marking, but usually thickly speckled. 



Troglodytes aedon (or parkmanii) . 

 House Wren. 



Eggs, 3 to 6. Size, about 1.16 x .82 ; pale bluish or greenish marked 

 and scrawled with dark brown or black. 



Quiscalus quiscula ceneus. 

 Bronzed Grackle. 



Eggs, 8 to 14. Size, about 2.05 x 1.55; pale buff or brownish white. 



Aix sponsa. 

 Wood Duck. 



