Tfie Oregc 



thi 



t of 

 th< 



hat 

 rial ice- 



' 



Sierra Junco 



Male and female, about % 'if e s ' ze 

 From toater- color fainting by Allan Brooks 



n 1 a n d 



and the high 

 >r t h , on 



"■ ■ ■ ■ 

 In 



mountains 



see the ves- 



races of 



iciers which 



of 



W e 



thward 



advana 



animal life before it; and, like- 



e has been regained by 



ural than that we should witne ugh 



he northward advance of those varieties of birds which 



withstand cold, and th ;p inding ccupation of 



south? 



id in th. 

 n Juncoes are the 

 are not 



nplicated 



I 

 of iij, ing southv. 

 ictly resident at, say, 

 hat region may be 



