THE GRAY MARMOT 



209 



strongly differentiated by its light, grizzly-gray color, with 

 certain dark markings. It is found from the Columbia River 

 northward to about 63 North Latitude and eastward to 

 Hudson Bay. It derives one of its names from the fact 



WOODCHUCK. 



that its alarm cry consists of a shrill whistle, which is re- 

 peated by the various members of the colony threatened 

 with danger. Often it is found in rocky mountain valleys, 

 high up, with the pika as its nearest neighbor. 



THE YELLOW-BELLIED MARMOT, 1 easily distinguished by 

 the bright-red hair on its under-parts, is a Southern species, 



1 Mar-mo'ta flav'i-ven-ter. 



