132 INDEX TO KEY TO FAMILIES. 



BAGE 



Group 4. Birds having wings measuring from 3.25 to 9.50 inches 



long 139 



Section 1. Bill witli strong hook, toes armed with talons . 139 



Section 2. Upper mandible with more or less hook, but toes 



not armed with talons . . . . -140 



Section 3. Tip of upper mandible not notched or hooked . 141 

 Part 1. First primary less than half as long as 



third, sometimes ver}' small . . •14] 



Part 2. First primary more tbaa half as long as 



third ....... 143 



Group 5. Birds having wings over 9.50 inches long , „ I47 



