List of Illustrations 



FACING PAGE 



Red-eyed Vireo's Nest in Which a Cowbird's Egg is Hid- 



'3 



13 



13 

 14 



15 

 18 



18 



den by a Floor having been Placed over It 

 The Same Nest with the Rightful Owner's Egg . 

 A Section of the Same Nest, Showing the Position of 



the Two Eggs .... 

 White-eyed Vireo on Nest 

 Young Baltimore Orioles and Nest 

 Ruffed Grouse on Nest .... 

 Young Redstarts, Day of Leaving Nest 

 Family of Oven-birds on the Day They Left Their Nest 20 

 Family of Young Chipping Sparrows Which Have Just 



Left Their Nest ....... 20 



Young Red-eyed Vireo the Day after Leaving its Nest 22 

 Young Yellow-billed Cuckoos, Twenty-four Hours be- 

 fore Leaving Nest ....... 



Family of Blue-winged Warblers, Showing the Young 



on the Day of Leaving Their Nest 

 Male Rose-breasted Grosbeak, One Year Old, Taking 



Sun Bath ........ 



Bob-white's Nest Full of Eggs (Colour) 



Nest and Eggs of Bobolink, on the Ground in a 



Meadow 



Vesper Sparrow's Nest ....... 



Plate B: Common Eggs (Colour) ..... 



Nest and Eggs of Field Sparrow, on Ground in Field 



OF Dead Grass 46 



22 



24 



27 

 36 



40 

 42 

 44 



