340 BIRDS OF THE ROCKIES 



NORANA. Summer resident ; probably common ; to the 

 southwest asstiva shades into sonorana. 



654. Black-throated blue warbler. DENDROICA C^RU- 

 LESCENS. Rare migrant ; one record. 



655. Myrtle warbler. DENDROICA CORONATA. Common 

 migrant ; scarcely known w T est of the range. 



656. Audubon's warbler. DENDROICA AUDUBONI. 

 Abundant summer resident ; breeds from 7,000 to 11,000 

 feet. 



657. Magnolia warbler. DENDROICA MACULOSA. Rare 

 migrant ; breeds northward. 



658. Cerulean warbler. DENDROICA RARA. Rare mi- 

 grant ; one record. 



66l. Black-poll warbler. DENDROICA STRIATA. Rare 

 summer resident ; sometimes common in migration ; one 

 breeding record for the State at Seven Lakes ; altitude, 

 11,000 feet. 



664. Grace's war bier. DENDROICA GRACI^E. Summer resi- 

 dent ; common in extreme southwestern part of the State. 



665. Black-throated gray warbler. DENDROICA NI- 

 GRESCENS. Summer resident ; not infrequent ; breeds in 

 pinon hills near Canon City. 



668. Townsend's warbler. DENDROICA TOWNSENDI. 

 Summer resident ; not uncommon ; western species, com- 

 ing east to base of foothills and a few miles out on plains ; 

 breeds from 5,500 to 8,000 feet in western Colorado ; in 

 fall it is found as high as 10,000 feet. 



672. Palm warbler. DENDROICA PALMARUM. Rare or 

 accidental migrant ; one specimen seen. 



674. Oven-bird. SEIURUS AUROCAPILLUS. Rare breeder, 

 on Mr. Aiken's authority. 



