Vlll 



coyrhWTs. 



CoMi'AKiNr. Feet . . . . . 

 CoMTAKiNG Hills . . . . . 



Eyes and Cameras . . . . . 



The Iius of Birds 



White Blackbirds and Other Freaks 



09 

 108 

 112 

 115 



PART III. 



PROBLEMS OF BIKl) LIFE: 



Little Studies in Zoological Tluory. 

 The Basis of Classification , 

 The Degrees in Classification 

 How Birds are named . 

 Concerning the Bird's Latin Name 



A Subspecies 



The Three Great Prohlkms of Bikd 

 The First Problem of Bird Life 

 The Second Problem of Bird Life 

 The Third Problem of Bird Life 

 Protection by Color 

 Zoogeography .... 

 Distribution .... 

 Migration .... 



121 



126 

 128 

 130 

 1.32 

 135 

 138 

 142 

 146 

 149 

 155 

 157 

 163 



PART IV. 

 SOME COMMON LAND-BIRDS: 



Little Studies in the Ar-t of Observation. 



About Birds' Drinking 



How A Hawk eats his Food ...... 



The Small Flycatchers 



175 

 179 

 183 



