List of Illustrations 



Between Pages 



YELLOW WARBLER ON NEST 50-51 



YOUNG WARBLERS EIGHT DAYS OLD . . . 50-51 



BUSH WILLOWS ALONG A WINDING CREEK . . 52-53 



TREES TO WHICH CAMERA WAS CLAMPED . 52-53 



SWALLOW RETURNING TO THE NEST . . . 54-55 

 YOUNG SWALLOW WITHIN HOLE BEGGING FOR 



FOOD 54-55 



YOUNG SWALLOWS 56-57 



BACK VIEW OF YOUNG SWALLOWS . . . 56-57 



SWALLOW CLEANING THE NEST 58-59 



THREE YOUNG SWALLOWS AND AN ADULT 



FLYING . 58-59 



MOURNING DOVE ON NEST ON A SLOPING LOG 60-61 



MOURNING DOVE'S NEST IN THE SHOOTS . . 60-61 



YOUNG MOURNING DOVE . . . . . . 62-63 



THE GREAT HORNED OWL LEAVING ITS NEST 62-63 



YOUNG OWLS ABOUT TEN DAYS OLD . . 64-65 



YOUNG HORNED OWLS ABOUT Two W T EEKS OLD 64-65 



YOUNG OWLS AT THREE WEEKS .... 66-67 



YOUNG OWLS AT FOUR WEEKS .... 66-67 



KINGBIRD THRUSTING FOOD DOWN THROAT OF 



HUNGRY YOUNG 68-69 



KINGBIRD FEEDING YOUNG 68-69 



PARENT KINGBIRD THRUSTS FOOD DOWN 



FORCEFULLY . 70-71 



9 



