List of Illustrations 



Between Pages 



FEMALE PARKMAN'S WREN INVESTIGATING ..,- 



NOISE . 32-33 



BARK REMOVED TO SHOW INCUBATING WREN 32-33 

 THE NEST OF THE PARKMAN'S WREN WITH 



Six EGGS . / . .:. 34-35 



THE YOUNG WRENS SOON AFTER HATCHING . 34-35 

 A CHARACTERISTIC POSE OF THE PARKMAN'S 



WREN . . . . . . . . . > . 36-37 



TERN AT NEST . . . ... . . . 36-37 



TERN GRACEFULLY FOLDING ITS WINGS . . 38-39 

 A TERN'S NEST AT THE EDGE OF SALT- WATER 



GRASS ... . , . : ' . . . 38-39 



THE TERNS' NESTS ARE MERE DEPRESSIONS 40-41 



TERN POSED TO SHOW THE GRACEFUL NECK . 40-41 

 A YOUNG TERN AT THE STAGE WHEN THEY 



LEARN TO FLY . . . . ... . 42-43 



A TERN'S NEST IN THE SEAWEED WITH EGGS . 42-43 

 YOUNG TERNS ARE GOOD EXAMPLES OF PRO- 

 TECTIVE COLORING . . . . . . . 44-45 



YOUNG TERNS SQUATTING AMONG THE ROCKS 44-45 



TERN SWIMMING IN THE WATER . . . . 46-47 



TERNS RESTING AND FLYING ABOUT ROCKS . 46-47 



YELLOW WARBLER ENTERING NEST . Y . 48-49 

 NEST OF WARBLER ABOUT Two FEET FROM THE 



GROUND 48-49 



