CONTENTS. 9 



Section 2. First primary more than half as long as 



third 119 



Part i. Tip of upper mandible with small but 



distinct hook or notch 119 



Part 2. Tip of upper mandible not notched or 



hooked 120 



GROUP 3. Birds having wings measuring from 2.75 to 



3.25 inches long 121 



Section i. First primary, less than half as long as 



third 121 



Part i. A small but distinct hook or notch at 



tip of upper mandible 121 



Part 2. Tip of upper mandible not notched or 



hooked 121 



Section 2. First primary, not short, always more 



than half as long as third 122 



Part i. Tip of upper mandible with small but 



distinct hook or notch 122 



Part 2. Tip of upper mandible not notched . 122 



GROUP 4. Birds having wings 3.25 to 9.50 inches long . 124 



Section i. Bill with strong hook claws armed with 



talons 124 



Section 2. Upper mandible with distinct hook or 



notch at tip, but feet not armed with talons . 125 



Section 3. Upper mandible not notched or hooked 



at tip 126 



Part i. First primary less than half as long as 



third 126 



Part 2. First primary more than half as long as 



third 128 



GROUP 5. Birds having wings over 9.50 inches long . 133 

 KEY TO THE SPECIES OF LAND BIRDS OF ILLINOIS AND WIS- 

 CONSIN 136 



FAMILY TETRAONID^;. GROUSE, QUAIL, ETC 136, 432 



SUBFAMILY PERDICIN.E. QUAIL AND PARTRIDGES . . 136, 432 



SUBFAMILY TETRAONIN^;. GROUSE AND PTARMIGAN '. 136, 435 



FAMILY PHASIANID.E. PHEASANTS, TURKEYS, ETC. . . 139, 442 



SUBFAMILY MELEAGRIN^;. TURKEYS 139, 442 



FAMILY COLUMBID.E. . PIGEONS AND DOVES .... 139, 444 

 FAMILY CATHARTID.E. AMERICAN VULTURES .... 141, 448 



INDEX TO KEY TO FAMILY FALCONID^; 143 



FAMILY FALCONID^E. HAWKS, FALCONS, EAGLES, ETC. . 145, 451 



