io8 GALLINACEOUS BIRDS PARTRIDGES 



The variety makers have given us about as man}' 

 Bob-whites as ptarmigans: Pueblo Bob- white, black 

 breasted Bob-white, Godman's Bob-white, Coyolco's 

 Bob-white, black-headed Bob-white, Salvin's Bob- 

 white, Guatemala Bob-white, and Yucatan Bob- 

 white. As their names indicate they have the same 

 whistle, they are no doubt one and the same bird, the 

 slight differences being climatic or geographical. 





