728 Field Museum of Natural History — Zqology, Vol. IX. 



Eggs, 3 to 4. Size, about .81 x .56; white, marked sparsely with 

 dots of dark brown. Bird, throat and under parts, mostly white ; crown, 

 slaty; back, olive green. Vireosylva oUvacea. 



Red-eyed Vireo. 



Eggs, 4 to 6. Size, about .92 x .61; dull white, sparsely scrawled 



and marked with dark brown or blackish. Bird, plumage showing 



more or less yellow. Icterus galbula. 



Baltimore Oriole. 

 Eggs, 3 to 5. Size, about .95 x .73 ; clear white, marked with dark 

 brown and black. Bird, under parts, white; upper parts, dark. 



Tyrannus tyr annus. 



Kingbird. 



Eggs, 3 to 6. Size, about 1. 16 x .82 ; pale bluish or greenish, marked 



and scrawled with dark brown and black. Quiscalus quiscula ceneus. 



Bronzed Grackle. 



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



Eggs, s to 8. Size, about .60 x .48 ; white, marked with pale brown. 



Penthestes atricapillus. 



Chickadee. 



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



brown. Troglodytes aedon (or parkmanii) . 



House Wren. 



SECTION 3. NEST ABOUT DWELLINGS AND BARNS. 



Eggs, 6 to 8. Size, about .64 x .49; vinaceous or pale lilac-brown, 

 speckled all over with pale brown. 



Troglodytes aedon (or parkmanii). 

 House Wren. 



SECTION 4. NEST IN OPEN FIELDS ON GROUND OR 

 IN BUNCH OF GRASS. 



(Eggs in this section may usually be distinguished by size.) 

 Eggs, 3 to 5. Size, about .70 x .5 1 ; pale bluish white, marked with 

 rufous brown. Spizella pusilla. 



Field Sparrow. 

 Eggs, 4 to 5. Size, about .73X.56; speckled and spotted with red- 

 dish brown, occasionally showing small markings of black and dull 

 lavender. Coturniculus savannarum australis. 



Grasshopper Sparrow. Yellow-winged Sparrow. 

 Eggs, 4 to 5. Size, about .78 x 60; white or bluish white, thickly 

 marked with rufous brown. Bird, breast striped with brown. 



Melospiza melodia. 

 Song Sparrow. 



