EXPLAJf ATION TO PLATE III. 

 I 

 Chordeiles virginianus, Gmelin. Nighthawk. 



Chordeiles virginiantis henryi, Oassin. Western Nighthawk. 



Chordeiles virginiantis chapmani, Sennett. Florida Nighthawk 



Chordeiles acutipennis texensis, Lawrence. Texan Nighthawk. 



Pica pica hudsonica, Sabine. American Magpie. 



Pica nuttalli, Audnbon. Yellow-billed Magpie. 



Xanthoura luxuosa, Lesson. Green Jay. 



Perisoreus canadensis, Linnaeus. Canada Jay. 



Perisoreiis canadensis nigricapillus, Ridgway. Labrador Jay. 



Perisoreus obs'curus, Ridgway. Oregon Jay. 



Nucifraga colunibiana, Wilson. Clarke's Nutcracker. 



Cyanocephalus cyanocephalus, Wied. Pinon Jay, 



