WHITE-TAILED PTARMIGAN 205 



many occasions I have examined their craws and have 

 usually found them stuffed with these willow buds. 

 None of these examinations, however, has been made 

 later than December. 



Of all our grouse the white-tailed ptarmigan is 

 probably the one least exposed to persecution by man. 

 No doubt some are killed by lynxes, martens and 

 weasels, but on the whole its enemies must be few in 

 number. 



