332 BIRDS OF THE ROCKIES 



VESPERTINUS MONTANus. Resident ; found every month of 

 the year ; no nests found,, but evidently breeds. 



515a. Rocky Mountain pine grosbeak. PINICOLA ENU- 

 CLEATOR MONTANA. Resident ; not uncommon ; most com- 

 mon in late summer and fall when most of them are just 

 below timber-line ; stragglers descend to foothills and 

 plains. 



517. Purple finch. CARPODACUS PURPUREUS. Migrant; 

 rare, if not accidental ; only one specimen, and that a 

 female. 



518. Cassin's purple finch. CARPODACUS CASSINI. Com- 

 mon resident ; winters from plains to 7,000 feet ; breeds 

 from that altitude to 10,000 feet. 



519- House finch. CARPODACUS MEXICANUS FRONTALIS. 

 Abundant resident. 



52 la. Mexican crossbill. LOXIA CURVIROSTRA STRICK- 

 LANDI. Resident ; not uncommon ; has been seen in sum- 

 mer at 11,000 feet; breeds in mountains, perhaps in 

 winter like its eastern antitype. 



522. White-winged crossbill. LOXIA LEUCOPTERA. Rare 

 winter visitor ; one record. 



524. Gray-crowned leucosticte. LEUCOSTICTE TEPHRO- 

 COTIS. Rare winter visitor ; western species. 



524a. Hepburn's leucosticte. LEUCOSTICTE TEPHROCOTIS 

 LITTORALIS. Rare winter visitor ; summers in the North. 



525. Black leucosticte. LEUCOSTICTE ATRATA. Rare 

 winter visitor; summer range unknown; winters in the 

 Rockies. 



526. Brown-capped leucosticte. LEUCOSTICTE AUSTRA- 

 LIS. This little bird and the white-tailed ptarmigan have 

 the highest summer range of any Colorado birds. 



